Part 8

Under this pressure the unhappy Dr. Price consented to repeat the experiments. He undertook to prepare in six weeks ten powders similar to those which he had used in his public demonstration. He appears to have been in a desperate state of mind, knowing that he could not expect to deceive the experts of the society. He hastily studied the works of some of the German alchemists as a forlorn hope, trusting that he might chance upon a successful method in their writings. He also prepared a bottle of laurel water, a deadly poison. Three Fellows of the Royal Society came on the appointed day, in August, 1783, to the laboratory, near Guildford. It is related (I hope it is not true) that one of them visited the laboratory the day before the trial, and, having obtained entrance by bribing the housekeeper in Price’s absence, discovered that his crucibles had false bottoms and recesses in which gold or silver could be hidden before the quicksilver and powder were introduced. Dr. Price appears to have received his visitors, but whether he commenced the test experiments in their presence or not does not appear. When they were solemnly assembled in the laboratory he quietly drank a tumblerful of the laurel water (hydrocyanic acid), which he had prepared, and fell dead before them. He left a fortune of £12,000 in the Funds. It has been discussed whether Dr. Price was a madman or an impostor. Probably vanity led him on to the course of deception which ended in this tragic way. He could not bring himself to confess failure or deception, nor to abscond. He ended his trouble by suicide. He was only thirty-one years of age! Not inappropriately he has been called the “Last of the Alchemists,” though a long interval of time separates him from the last but one and the days when the old traditions of the Arabians’ al-chemy were really treasured and the mystic art still practised.

33. _A Story of Sham Diamonds and Pearls_

It has been recently declared by a dealer in precious stones that though diamonds and other stones can be very well imitated, yet pearls cannot be. This is hardly correct, as artificial pearls so well made as to defy detection by the casual glance of any but a professional expert are common enough. Who does not know the pathetic story by the greatest of French writers, Guy de Maupassant, of the wife of a poor Government clerk, who borrowed a necklace from another lady to wear at a reception at the “Ministry”? She lost the necklace (I forget whether it was of pearls or of diamonds, or both); but she and her husband were too proud to confess the fact, and purchased another necklace exactly like the lost one, for a sum the outlay of which reduced them for the rest of their lives to a state of penury and social exile. They returned the new necklace in place of the lost one without a word, and accepted their fate. By chance, the poor ruined lady, fifteen years afterwards, met her old friend, who had long since passed from her acquaintance, together with other prosperous people. Moved by her former friend’s kind reception, she related the true history of the pearl necklace of long ago. “Great heavens!” exclaimed the prosperous lady. “The necklace I lent you was made with imitation gems! It was not worth five pounds!” Too late! Nothing now could give back to the high-minded, self-respecting little couple the lost years of youth passed in privation and bitterness.

34. _The Nature of Pearls_

Pearls have been lately studied by zoologists, and their true history made known. They are a disease, caused, like so many other diseases, by an infecting parasite. It is common knowledge that they are found much as we see them in jewellery, as little lustrous spheres embedded in the soft bodies of various shellfish, such as mussels, oysters, and even some kinds of whelks. They are not found in the shellfish like crabs and lobsters, called Crustacea, but only in those like snails, clams and oysters, called Mollusca. Pink pearls are found in some kinds of pink-shelled whelks. A pearl-mussel or pearl-oyster has a pearly lining to its shell, which is always being laid down layer by layer by the surface of the mussel’s or oyster’s body, where it rests in contact with the shell, which consequently increases in thickness. If a grain of sand or a little fish gets in between the shell and the soft body of its maker, it rapidly is coated over with a layer of pearl, and so a pearly boss or lump is produced, projecting on the inner face of the shell, and forming part of it. These are called “blister-pearls,” and are very beautiful, though of little value, since they are not complete all round, but merely knobs of the general “mother-of-pearl” surface. These blister-pearls can be produced artificially by introducing a hard body between the shell and the living oyster or mussel.

It used to be thought that the true spherical pearls were caused by a hard granule of some kind pressing its way into the soft substance of the shell-fish, pushing a layer of the pearl-producing surface like a pocket in front of it. But it is now known that this “pushing in” is the work, not of an inanimate granule, but of a minute parasitic worm, which becomes thus enclosed by a pocket of the outer skin. The pocket closes up at its neck, and lays down layer after layer of pearl substance around the intrusive parasite, the dead remains of which can be detected with the microscope in sections of the pearl forming there a central kernel or nucleus. These parasitic worms were first detected in the small pearls formed by the common edible sea-mussel.

Though they are very small, sea-mussel pearls are collected for the market at Conway, in North Wales, and also on the coast of France. The parasitic worm is the young of a worm which, when adult, lives in the intestine of carnivorous fishes. It appears that it has to pass from and with the mussel into shellfish-eating sea fishes, where, although the mussel is digested, the parasite is not, but grows in size and alters its shape considerably. Then after a time the worm is swallowed, with the fish in which it has fixed itself, by sharks, dogfish, and such fish-eating fishes. In these at last it becomes adult and of some size, an inch or so long, varying according to the particular kind, and produces many thousands of eggs, which hatch out as minute creatures swimming in the sea-water, and fortunate if they fall upon a bed of mussels. They enter the mussel’s shell and make their way into its soft substance. A certain number (very few) get encased in the skin and covered up by pearl-layers, which is the mussel’s way of killing them and putting them out of mischief. The others which have entered other regions of the mussel’s body thrive, and have a chance of being swallowed by a mussel-eating fish, and then a further chance of that fish being eaten by a shark. If this happens the lucky worm--like the Italian who gets a winning number in three successive drawings of a lottery--gains the big prize. He becomes adult and produces innumerable young, who in their turn enter upon the chanceful career of a mussel parasite.

Thus we see that a pearl is not only a disease or abnormal growth caused by a parasite, but is actually an elaborately formed tomb or sarcophagus, in which the parasite is enclosed layer upon layer. This mode of disposing of parasites and other intrusive bodies is not unusual in animals. The terrible little flesh-worm--the Trichina--which causes the death of rats, pigs, and men who eat raw meat, is sometimes conquered in this way. It is found in the muscles (flesh) of man and animals enclosed in little pearl-like sacs, half the size of a hempseed, and it dies there, unless the invaded animal should die, and its flesh be eaten (as raw ham for instance) by another animal. The burying of inconvenient corpses in plaster of paris, corresponding to pearls as we now know them, has been a method of concealment occasionally adopted by criminals. On the whole, pearls have not very pleasant associations.

The history of the special parasitic worm which invades the beautiful little pearl-oyster of Ceylon has recently been followed out by skilful naturalists. There, too, a smaller oyster-eating fish of a peculiar kind, and a larger fish which eats the first fish, are necessary for the reproduction and multiplication of the pearl-producing parasites. The new Ceylon Pearl-Fishing Company has, therefore, to see to it that both these kinds of fish are encouraged to live in the sea near where the pearl oysters are found, and it is their object to increase the parasitic disease by which pearls are formed, and ensure an abundance of parasites.

An interesting new method has been recently applied to the examination of pearl oysters for pearls. The Rontgen rays are used to produce a skiagraph (such as surgeons use in searching for a bullet) of the pearl oysters when brought into harbour. They are thus rapidly examined one by one, without injury, and the shadow-picture shows the pearl or pearls inside those oysters which are infected. The pearlless oysters are returned to the depths of the sea, whence they came--those with small pearls only are kept in special reserves or sea-lakes, in order that the pearl may grow in size, whilst only those with good-sized pearls are opened at once, in order that the pearl may be extracted and sent to market.

There were great findings of pearls in the fresh-water pearl mussels of the Scotch rivers in former days. In the last forty years of the eighteenth century these pearls were exported from Scotland to France to the value of £100,000.

In the eighteenth century not only did they get their pearls from European rivers instead of from the East; but, instead of being excited about the artificial production of diamonds, they were driven wild with astonishment by the demonstration of the volatilisation of these stones--the disappearance of diamonds into invisible vapour when sufficiently heated. That the hardest stone in nature could be thus dissipated into thin air seemed incredible. On Aug. 10, 1771, a chemist named Rouelle invited to his laboratory to witness this wonder a company comprising the Margrave of Baden and the Princess his wife, the Dukes of Chaulne and of Nivernois, the Marchionesses of Nesle and of Pons, the Countess of Polignac, and some members of the Academy of Sciences, including the great chemist Lavoisier. Four diamonds--the largest belonging to the Count Lauraguais--were submitted before the eyes of all to the heat of a furnace, and in three hours had completely evaporated. There was, no doubt, room here for a mystification and for the abstraction of the diamonds with a view to dishonest appropriation. But no such purpose existed. The experiment was a genuine one, and Rouelle and his brother were honest investigators. They established the fact, now demonstrated as a lecture experiment, that the diamond is volatilised at very high temperatures. A more celebrated “evaporation” of diamonds--that which is known as “the affair of the Queen’s necklace”--took place a few years later in Paris, when no scientific investigation was connected with the embarrassing disappearance of the Royal trinket.

35. _A King Who was a Zoologist_

The King of Portugal, Carlos di Braganza, who was assassinated in the spring of 1908, was one of the most gifted and vigorous men of his age, fearless and intelligent to a rare degree, good-hearted, and devoted to the welfare of his people. If any man were justified in having no fear of outrage because he was conscious that his uprightness was proved and known to all men, his benevolence experienced by all, his ability and vast knowledge recognised by all, Dom Carlos was that man. Fanaticism, however, takes no account of the virtues of its victims. Until society has invented a method for keeping instruments of destruction out of the reach of dangerous, more or less maniacal individuals, all those who excite the fanatic’s brain, even by the excellence and nobility of their lives, risk death whenever they trust themselves to the tender mercies of a crowd. Psychology may one day enable us to detect, and improved supervision of children enable us to segregate before it is too late, the latent assassins in our midst. If they have not a king as their quarry their reason is palsied by a president, and were there no presidents, they would become homicidal in the presence of a prefect or a policeman--even of a professor.

Some four years ago I had the honour of conducting Dom Carlos round the Natural History Museum in Cromwell Road. He arrived without attendant or escort, and I passed two hours alone with him. I had been told that he was a great shot and fond of natural history, that he played every athletic game, rode, and swam better than the best, that he was a fine water-colour painter, a real artist--and a first-rate musician and singer. I was astonished at his knowledge and personal experience in natural history. His burly form and bright, honest face gave me a most agreeable impression, and when he said (as I had been told he would) to each explanation of a specimen upon which I ventured for his edification, “I know! I know!” felt that it was true, and that he really did know. “I have shot thirty of them in the south of my country,” he said of some rare bird. “I know! I know! I have described a new species like that in my book on the birds of Portugal. I shall send it to you!” was his comment on another. When we came to some wonderful coral-like specimens--sea-pens and sea-feathers, dredged in the deep sea and preserved in spirits, for exhibition in the Museum--he said, to my astonishment, “Those are very bad. I get much better than those in my yacht off the Portuguese coast. I preserve them myself; it is a real art. I shall send you some.” I said they would be a very welcome addition. “Yes, I know! I know!” he said. “Would you like some fishes, too? The Prince of Monaco has some fine things, and he led me to collect also myself. I have now many things better than his. I shall send you some fishes, too.” And he did. A few months after his return to Portugal he sent to the Museum a large collection, preserved in spirit, which included many very fine and interesting specimens of deep-water Atlantic fishes; also his work, with coloured plates, on the Birds of Portugal, and a most remarkable publication on the tunny fisheries of the South Coast of Portugal--giving a careful survey of the waters, sea bottom, currents, fauna, and flora in correct, expert form, such as might issue from a Government Fisheries Board, but in this case done, as modestly indicated on the title-page, by the Head of the State himself, “Dom Carlos di Braganza.” He went into the work-rooms of the Museum, where some new fishes were being drawn, and conversed with the naturalist in charge, and criticised the drawings. He saw everything, appreciated everything, and then looking at his watch, said, “I have only five minutes to get to a lunch party. Thank you very much for the most delightful time. I should like to stay all the day; it is a splendid place,” and was off in his brougham.

I exhibited the specimens and books sent by his Majesty for some weeks in the Central Hall of the museum, before they were incorporated in the great collection, for I felt that it was a rare and interesting thing that a king should not merely take a sportsman’s pleasure in birds, beasts, and fishes, but actually be, so to speak, “one of us”--a zoologist who discovers, describes, and names new things. The Prince of Monaco is the only other head of a State who is a serious scientific naturalist. He has built and endowed a magnificent museum and laboratory at Monaco, where his skilled assistants carry on researches and look after the extremely valuable and important collections which he has himself made in a series of cruises in the Atlantic extending over many years. He has not only employed capable naturalists to help him, but is himself the chief authority and an original discoverer in “oceanography,” the science of the great oceans.

A year or so ago, when Dom Carlos visited Paris, a special fête and reception was organised in his honour at the “Muséum d’Histoire Naturelle,” in the Jardin des Plantes. The “Museum” of the Jardin des Plantes is a very remarkable institution, including a zoological and botanical garden, laboratories of chemistry, physics, and physiology, besides the great collections of minerals, fossils, skeletons, and preserved specimens of animals and plants. It is governed by the professors and the director who are in charge of the garden, the laboratories, and the collections, and owes its dignity and its celebrity to the distinguished men of science who for a century and a half have made discoveries and taught there. They are not subject to a board of eminent and wealthy persons, nor is the administration of the antiquities at the Louvre and of the National Library muddled up with that of the great scientific workshop of Natural History.

When the President of the Republic conceived the plan of entertaining the King of Portugal at the Museum of Natural History there were those who supposed that the Minister of Education would, as a great State official, be called upon to arrange the proceedings. Nothing of the sort was done. It was found that the Minister had no authority in regard to the Museum, which, as an independent State institution, organised and carried out the reception through its own officers. The director and professors received President Fallières and the King, escorted by the troops of the Republic. The garden and buildings were ablaze with light and colour, and a large company assembled to take part in the fête. In the great hall of the museum Becquerel, Moissan, and others showed their most recent discoveries as to radium, artificial diamonds, and such matters to the King; others exhibited new birds and fishes, the okapi and newly-discovered fossils, and briefly explained their history and significance. The King conferred decorations on the scientific staff, and gave friendly acknowledgments to all who had thus sought to gratify his special tastes, and prepared for him a really exceptional gala-demonstration of scientific discovery. The official “middle-men,” who in other countries contrive to divert the honour and emoluments due to men of science, to their own profit, were on this occasion happily kept at a distance.

36. _The Transmission to Offspring of Acquired Qualities_

The cruel fate of Dom Carlos of Portugal naturally enough produced philosophic and thoughtful articles in some of the journals of the day. An able writer told his readers that the “kingly caste” has characteristics peculiar to itself, “which illustrate the Darwinian law.” He does not say what Darwinian law, and I am afraid he would find it difficult to do so. He says that people who for centuries have had their own way (how many kingly families have done so?), who have always lived on good food and never tasted bad wine, and have constantly conversed with interesting people (not usually the chance of princes!) must certainly, if subject to “the laws which govern animal and plant life,” produce well-marked characteristics in their offspring--and he goes on to speak of a fine appetite for food (what he describes is really a morbid condition connected with indigestion) as indigenous to Royalty, and declares that the gift of recognising faces and remembering names is “a faculty cultivated by generations of practice.”

One must recognise with satisfaction the desire to explain the facts and varieties of human life and character by reference to “the laws which govern animal and plant life.” It is by faithfully and truly carrying out the inquiries suggested by that desire that the knowledge which is the sole and absolutely essential condition for the safe conduct of human life and the increased happiness of human communities, can be obtained, and by such inquiries only; and, further, only upon the condition that the investigation is conducted in the true scientific spirit with accuracy and without prejudice. The remarks upon the kingly caste which I have quoted above show with what “legerity and temerity” a clever and respected writer will formulate phrases and conclusions which are, in face of what Darwin and his successors have demonstrated, absurdly erroneous, in fact, topsy-turvy as compared with the reality.

The main doctrine which Darwin and his followers have established is that neither castes nor families of higher or lower living things, including man, acquire any new characteristics by exposure to special circumstances or by consuming finer or coarser food, which can or do become innate or fixed in the race. The individual may be improved or depraved, enlarged or enfeebled, by the conditions of his individual life, but he cannot transmit the qualities--the improvement, the depravity, the enlargement, or the dwindling--which have been thus attained by him to his offspring. The race cannot be changed in this way. All the parents can transmit is the quality which they themselves have inherited of resisting or of collapsing, of becoming enfeebled, or of showing strength and vigour, under certain given conditions. The characteristics of Royalty are not characteristics brought about by the Royal state, any more than the characteristics of English race-horses are brought about by the racing state or by life in a breeder’s stable. The characteristics of Royalty are like those of other living things, the characteristics of a certain family or blend of families or strains. Whatever characteristics distinct Royal families have in common with one another are not due to the existence of a natural law in virtue of which the occupations and opportunities of the Royal state produce “faculties” or “characteristics” in the “blood” or “stock.” Such similarity of characteristics is due either to the similarity of the demands and conditions of Court life in all parts of Europe, acting as an educating force on the individual, or to the intermarrying and consequent blending of family characteristics among a large proportion of the Royal Houses at present existing.

It is very difficult--indeed impossible until much more is written and read on the subjects of breeding and of psychology--to persuade people to abandon the notion that a man who has drunk good wine and conversed with interesting people will, as a direct result, transmit something which he has “taken up” or absorbed from the good wine and the clever people to his offspring, and that a faculty for this or that art or accomplishment cultivated by generation after generation is increased thereby, and transferred as it were into the very vitals of the race--the reproductive germs which each individual has within him. There is no truth whatever in these fancies. They are popular and very natural delusions, which are not only devoid of direct proof by simple observation and experiment, such as that made by all breeders of stock and by medical men, but are also contrary to the great general principles which have been found to explain the varied and most important facts known as to breeding, inheritance, and variation. The same erroneous theory of inheritance now applied to royalty has been put forward in regard to the feeble-minded, the ill-grown, and the incapable at the other end of the social scale.