Part 10

It is a picture of a great manufacturing establishment of the Scottish Co-operative Wholesale Society, at Shieldhall, near Glasgow, on the Clyde. This society is a federation of all the retail societies of Scotland, 238 in number, with a membership of over 150,000 persons. The society began on a moderate scale many years ago, but its development has been marvelous. In 1887 it started out on a career which has since continued, owing to the indomitable energy of one of its members, himself a working man. The buildings stand in a very healthy locality, the health of the working force being considered of the first importance. They seem to have learned that sickness is loss--loss of time, of productive energy--and that it is a costly matter. As Mr. Beecher once said, "it is the one burden that bends, almost breaks, the back of society."

These Scotchmen are realizing, just as far as is possible, the condition of a sound mind in a sound body. They recognize the rights of the laborer to health, and place him in a position while working, so that his body may not deteriorate any more than is natural for it to do as age advances. The living machine must not be harmed more than the dead machinery. The land consists of 12 acres, and cost $2,500 an acre; nearly all of it is covered with fine buildings, in which 19 different industries are carried on, many of them on a large scale. Every one of these buildings is constructed after modern methods, with every requirement, not only for convenience but for health. The workrooms are cosy and spacious, well ventilated, warmed in cold weather by steam, and lighted by electricity. The best sanitary arrangements known have been introduced, and the excellent health of the workmen and workwomen, of whom there are over 1,000 of each, tells the story of sanitation.

Two large dining-rooms, one for men and one for women, are provided; also two large reading-rooms with all necessary papers, periodicals, books and means of amusement. Its only lack is a gymnasium and a field for athletic sports, but these may in time be added. Food of the best quality is supplied for all who desire it at cost. A dish of oatmeal and milk costs three cents; a large scone with tea or coffee, the same; Scotch broth or soup, two cents; stewed meat and potatoes, eight cents; roast beef or mutton, with potatoes, ten cents; a good and sufficient meal need not cost over twelve cents. Standard wages are paid, and two and one-half hours less time demanded than in private shops.

Men work fifty-three hours weekly, women forty-four. Most of the latter work in the shirt factory, but they do not need to sing Hood's _Song of the Shirt_. Sweating is unknown; every worker, from the youngest to the oldest, receives his or her share of the profits, which amount to about $15,000 yearly.

Here we have an almost ideal manufacturing establishment, and if all were such we should have higher hopes for human health in the immediate future for our workers in factories. It was the outgrowth, the effort of the Scotch, a highly intellectual race, to adjust itself to its environment. Necessity and competition acting on them forced them to new and better adjustments. Such a result could hardly have been achieved by a less hard-headed and practical people, a race on which evolution has for ages produced some of its best effects.

HYGIENE.--But I fancy you ask me, Is there any hope that in the future evolution, and with it adjustment to environment, will carry man so far that an ideal state of health will be the lot of all? This is what hygiene promises. Is it a vain hope? If we look at what older sciences have done for man we find much to encourage us. In astronomy, by the aid of mathematics, we can calculate with certitude the date of future eclipses. In many other sciences we can make accurate predictions and accomplish results of the greatest importance. Indeed, science has become almost our only authority. Imperfect as it yet is, we trust it, perhaps, too implicitly. The science of hygiene is the youngest of all the sciences. Not that the Greeks, the Hebrews, the Hindoos and Chinese did not have some practical knowledge on the subject, but it was rude and empirical. With the discoveries of micro-organisms as the cause of a series of the worst diseases, we have begun to place hygiene alongside mathematics and chemistry.

We now know the origin of many diseases which formerly were enveloped in mystery. Can we remove them? That is the next task. Hygiene will in the future busy itself with this great question. It has, it is believed, already made many cities proof, or almost proof, against cholera and yellow fever. It will try to make them proof against other contagious diseases also, and it will without doubt succeed. But its work will not then have been accomplished. We may avoid the causes of disease and still be puny creatures. Our great task will be the building up of bodies equal to the needs of our environment. This we have, in a small way, already begun to do--imitating the ancient Greeks--in our schools of physical culture, where the body can be trained up to its best, and also in our laboratories for psychological research, in which the relation of mind and body are being carefully investigated, where every subject connected with every function is being studied, even weariness, anger, hope, despair, drink, food, sleep, the weather, and their effects on function. The results of such knowledge will prove beyond a doubt that the health of the body, as well as of the mind, is of the highest importance for success in life, for happiness and usefulness, and that we can do much to secure both.

My own personal hope for the future of human health lies in the evolution and spread of this gospel of hygiene.

Hygiene interests itself in all that relates to human well-being. It may be defined as _the ethics of the body--the science of true living_. It promises health to all who obey its laws. It makes no such promise to those who disregard them. In the future, no doubt, a higher average of health will be the result of our ever-increasing knowledge; and whenever we are able and willing to apply this knowledge to our own bodily and mental conduct we shall be amply rewarded. This much we can safely promise, but no more. On the contrary, the violators of hygienic laws will, with their offspring, suffer in the future as in the past, and that suffering will be in the form of pain, disease, degeneration, premature death.

This may seem hard to many who are sensitive to the pains and sorrows of the world, and some have gone so far as to attribute to the author of nature, the unknown cause of all things, a character anything but good. But this is a very erroneous way of looking at the subject. To discuss it fully we should have to consider the question of the mystery of evil, which cannot be done here. Suffice it to say, the creation, the evolution of the race, is by law. Causes produce their legitimate results. If it were not so, our sufferings might be far greater, and no progress would result. Let us be thankful that nature is as it is, and let us do our best to put our lives in harmony with it. By so doing, we may in the end attain all that we strive for.

THE GERM PLASM; ITS RELATION TO OFFSPRING.

The germ plasm is a most interesting and remarkable substance. It must be interesting, for everything which relates to life and reproduction is interesting. It must be remarkable, for out of it, under proper conditions, remarkable results are produced. Although our knowledge of its nature is very imperfect, yet let us not on this account refuse to try to understand what little is known.

In the first place, the germ plasm of animals which reproduce sexually is composed of two germ plasms--that of the male, and that of the female. That of the male is called the _spermatozoon_ (pronounced sper'ma-to-zooen). It is sometimes called spermatozoid; the plural is spermatozoa. It is exceedingly small, the smallest of any cell in the body, and has the power to move from place to place. These cells are produced in enormous numbers, and so far as they have been observed under the microscope they differ considerably in power of movement and in perfection of development. Considering their small size, they must make a very long journey to find the ovum; and if they were only few in number, they would rarely succeed; but existing in large numbers, for there are millions of them produced in each sexual act of the male, some of them are pretty sure to do so, and, probably in most cases, it would be those most vigorous and capable of making the journey most direct and in the least time.

That of the female is called the _ovum_, or egg; plural, _ova_. Only a small number are produced, when compared with the number of the male spermatozoa, but there are quite enough for the ends they are to serve. They have not the same power of movement, though they do move somewhat as the amaeba does. They are also very much larger than the male cells.

The eggs of all mammals look alike as they come from the ovaries, but take on some changes afterward. Haeckel says: "Every primitive egg being an entirely simple, somewhat round, moving, naked cell, possesses no membrane, and consists only of a nucleus and protoplasm. These two parts have long borne distinctive names: the protoplasm being called the _vitellus_, or yelk, and the nucleus the _germinal vesicle_ (_vesicula germinativa_)." The same author also says: "The human egg cannot be distinguished from that of most other mammals, either in its immature or in its more complete condition. Its form, its size, its composition, are approximately the same in all. In its fully developed condition it has an average diameter of one-tenth of a line--about the one hundred and twentieth part of an inch. If the mammalian egg is properly isolated, and held on a plate of glass towards the light, it appears to the eye as a very fine point. The normal eggs of most of the higher mammals are of almost exactly the same size. They have the same spherical form; always the same characteristic covering; always the same clear, round germinal vesicle with its dark germinal spot. Even under the highest power of our best microscopes there _appears_ to be no essential difference between the eggs of a human being and that of the ape, the dog, the cat or other animal." This similarity is one of appearance only. There is a difference, and of this I shall speak later. It may be asked if the egg of a bird is the same as the egg of a mammal. The mature bird's egg, as it is laid in the nest, differs materially from that of any mammal; but in its miniature form, as found in the hen's ovary, it is also the same. The egg of a bird after it leaves the ovary, and as it passes along the oviduct, takes on secretions in its passage which it converts into yelk, and afterwards a shell is added to give it protection in the external world, where it must undergo incubation before it can become a bird; but before it takes on its shell it has been fertilized, and this also causes other changes. Haeckel says: "After the ripe egg of the bird has left the ovary, and has been fertilized in the oviduct, it surrounds itself with various coverings which are secreted from the inner surface of the oviduct. The thick layer of transparent albumen first forms round the yellow yelk; this is followed by the formation of the outer calcareous shell, within which is another envelope, or skin. All these coverings and additions which are gradually formed round the egg are of no importance to the development of the embryo; they are parts which have nothing to do with the simple egg cell. Even in the case of other animals we often find large eggs with thick coverings. For example, the shark's; but even in this case the egg is originally exactly similar to those of mammals when in its primitive condition as it comes from the ovary. In the case of the bird these additions serve only as food for the growing embryo, which, in the case of mammals, is furnished by a stream of the mother's blood, making 'stored-up' nutriment unnecessary."

Before, however, we can have _true germ plasm_ the mother cell must be fertilized by the male cell. This is true of all the higher plants and animals. There are some low plants and animals in which fertilization by the male cell is not required. This has been called virginal generation. In no mammal is this possible.

How fertilization takes place and what it signifies are both important questions which have not been entirely settled, and it almost seems as if they could not be settled in some of their details, except in the lower forms of life. Nature has so protected the process from observation in the higher animals that it cannot be studied in detail; but in plants and the lowest animals it has been observed with some success, and we may infer that the process is very much the same in the higher animals.

Haeckel, in his great work on the Evolution of Man, tells us that "The process of fertilization in sexual generation depends essentially on the fact that two dissimilar cells meet and blend. In former times the strangest views prevailed with regard to this act. Men have always been disposed to regard it as thoroughly mystical, and the most widely different hypotheses have been framed to account for it. It is only within a few years that closer study has shown that the whole process of fertilization is extremely simple, and entirely without special mystery. Essentially, it consists merely in the fact that the male sperm-cell coalesces with the female egg-cell. Owing to its sinuous movements, the very mobile sperm-cell finds its way to the female egg-cell, penetrates the membrane of the latter by a perforating motion, and coalesces with its cell material.

"A poet might find in this circumstance a capital opportunity for painting in glowing colors the wonderful mystery of fertilization; he might describe the struggles of the 'seed animalcules' eagerly dancing round the egg-cell shut up in its many coverings, disputing the passage through the minute pore-canals of the chorion, and then of purpose burying themselves in the protoplasm of the yelk mass, where, in a spirit of self-sacrifice, they completely efface themselves in the better 'ego.' But the critical naturalist very prosaically conceives this poetical incident, this 'crown of love,' as the mere coalescence of two cells! The result of this is, that in the first place the egg-cell is rendered capable of further evolution, and, secondly, that the hereditary qualities of _both_ parents can be transmitted to the child."

By coalescence is understood, growing together, not mingling as water and milk might when mixed. More recent observations indicate that during coalescence both the male and female cells throw off some portions of their substance. It is also considered that the important part of each cell is its nucleus. In it all hereditary characteristics are stored up. If the nucleus be absent in either cell these cells cannot reproduce. In unicellular, or one-celled, organisms, it has been found in multiplication by division, a part of the nucleus must go with each half, otherwise the half without a part of it does not grow. In experiments in laboratories, artificial division of simple organisms may be made, and each fragment will become a perfect creature if only a very small piece of the nucleus goes with the separated portion; but if a part is cut off without any of the nucleus, then, while it may live on for a short time, it can not grow or propagate.

Possibly we have here an explanation of some hereditary phenomena in human beings. If there is an unequal division, and more of the male than of the female nucleus, the child might, as a result, inherit more of the father's than of the mother's characteristics, or the reverse.

What has been so far said about the germ plasm has been to enable the reader to possess a degree of intelligence on the nature of fertilization, so far as it is known; but from a practical standpoint the most important knowledge for those prospective parents who wish to practice intelligent stirpiculture is to understand that the health of the germ plasm or fertilized ovum depends on the health of the parents. By health, I mean the possession of a good constitution, to which will be added a strong hold on life, power to do and to endure, and quickly to recover from weariness. Disease will be easily warded off in such persons, so that there will be generally good health. Such a condition of body is usually inherited. It depends on the possession of a large supply in the body of living matter--firm muscles, a good heart, lungs and digestive organs. Those who are feeble cannot endure much; whose heart, lungs and digestive organs are weak; whose hold on life is slight, can rarely endow their offspring with these high qualities. Their children may live if no great strain comes upon them; but if they must take an active part in the struggle and competition going on in the world they cannot endure it. Mr. Spencer puts the case very aptly in his work on Ethics where he says: "It results that where maternal vigor is great, and the surplus vitality consequently large, a long series of children may be borne before any deterioration in their quality becomes marked; while, on the other hand, a mother with but a small surplus may soon cease altogether to reproduce. Further, it results that variations in the state of health of parents which involves variations in the surplus vitality have their effects on the constitutions of offspring to the extent that offspring borne during greatly deranged maternal health are decidedly feebler. And then, lastly and chiefly, it results that after the constitutional vigor has culminated, and there has commenced that gradual decline which in some twenty years or so brings absolute infertility, there goes on a gradual decrease in that surplus vitality on which the production of offspring depends, and a consequent deterioration in the quality of such offspring. This which is _a priori_ conclusion is verified _a posteriori_.

"Mr. J. Mathews Duncan, in his work on Fecundity, Fertility, Sterility and allied topics, has given results of statistics which show that mothers of twenty-five bear the finest infants, and that from mothers whose ages at marriage range from twenty to twenty-five years there come infants which have a lower rate of mortality than those resulting from marriages consummated when the mothers' ages are smaller or greater. The apparent slight incongruity between these two statements being due to the fact that whereas marriages commenced before twenty and twenty-five cover the whole of the period of highest vigor, marriages commenced at five and twenty cover a period which lacks the years during which vigor is rising to its climax and includes only the years of decline from the climax."

This quotation from Mr. Spencer needs a qualifying remark. Mr. Galton, in his work on Hereditary Genius, found that the average age of mothers of men of the greatest ability was about thirty, and of their fathers thirty-five. In such cases, the physical and intellectual strength must have been above the average, and, consequently, it continued to a more advanced age. Besides, those of great ability mature later.

It may also be added that Duncan's statistics, quoted by Spencer, are average statistics gathered from tables of mortality, and include every class of persons. Now, average statistics do not apply to individual cases, and they would not apply to those highly endowed physically and intellectually.

Further, those who are well endowed at birth and whose lives are in accordance with hygienic law, that is, those who do not squander their physiological resources by sensuality, by intemperance, or by excesses of any sort retain their health to a greater age than those whose lives are the reverse. Such are of a youthful physiological age, which is not altogether determined by the actual number of years they have lived, but by very high physiological conditions.

From all this we conclude that a very important rule in the production of offspring, if we would have those offspring superior, is to maintain a high degree of health--a condition in which there is a surplus of physiological capital to produce children with endowments equal to, if not superior to, their parents.

Another subject requires treatment here. It is the effect of alcohol on offspring. We are yet lacking in statistics giving the facts we need to know on this subject; but the general observation of competent persons who have had good opportunities to study it may teach us something. Alcohol, in its circulation in the blood, penetrates every part; not even the germ plasm escapes. Demme studied ten families of drinkers and ten families of temperate persons. The direct posterity of the ten families of drinkers included fifty-seven children. Of these, twenty-five died in the first weeks and months of their lives; six were idiots; in five a striking backwardness of their longitudinal growth was observed; five were affected with epilepsy, and five with inborn diseases. Thus, of the fifty-seven children of drinkers only ten, or 17.5 per cent., had normal constitutions and healthful growth. The ten sober families had sixty-one children, five only dying in the first weeks; four were affected with curable diseases of the nervous system; two only had inborn defects. The remaining fifty, 81.9 per cent., were normal in their constitutions and development.

In this statement we have a graphic object lesson of the evil effects of alcohol on the germ plasm. Natural selection had far more to do in removing those unfit to survive in the intemperate than in the temperate families.

A knowledge of the evil effects of alcohol on the unborn child was known to the ancients. The mother of Sampson was warned "not to drink any wine or strong drink nor to eat any unclean thing" because she was to conceive and bear a son who was to deliver Israel out of the hands of the Philistines. Manoah was so interested in what the angel of the Lord had said to his wife that he sought an interview with him for further confirmation, and asked: "How shall we order the child, and how shall we do unto him?" evidently meaning, "How shall we train and educate him?" and the same advice was given as before. Whatever view the reader may hold as to the inspiration or non-inspiration of the Bible, certainly this advice was good. Other examples similar to it are to be found, not only in the same book, but in numerous historical works, and also abundant evidence in our own time of the evil effects of alcoholic drinks on unborn children giving them a tendency to insanity, idiocy and other nervous diseases. A whole book might be written on this branch of our subject.

To what extent food affects the germ plasm we remain somewhat in ignorance. We know that it is from it that the body is nourished, and from it also the stored up or surplus matter in our systems is obtained. The larger the surplus the more highly will the offspring be endowed with energy is a fact clearly set forth by Mr. Spencer. A surplus of fatty food stored up in the body, however, cannot be of much service and may prove injurious. A deficiency of nitrogenous food would also, it seems to me, be an evil. The germ plasm, or its most important part, is a highly nitrogenous substance, like all protoplasm, or living matter. The highest form of germ plasm, that with a most complex molecular structure, would hardly be formed if there was a deficiency of nitrogenous matter in the blood.