Scientific American Supplement, No. 1157, March 5, 1898

Chapter 4

Chapter 43,920 wordsPublic domain

It is needless, perhaps, to repeat what has been said so often in the columns of this journal, that in our judgment the greatest value and only justification of great urban parks exist in the fact that they can bring the country into the city and give to people who are obliged to pass their lives in cities the opportunity to enjoy the refreshment of mind and body which can only be found in communion with nature and the contemplation of beautiful natural objects harmoniously arranged. Parks have other and very important uses, but this is their highest claim to recognition. If it is the highest duty of the park maker to bring the country into the city, every road and every walk not absolutely needed to make the points of greatest interest and beauty easily accessible is an injury to his scheme, and every building and unnecessary construction of every kind reduces the value of his creation, as do trees and shrubs and other flowering plants which are out of harmony with their surroundings. Such things injure the artistic value of a park; they unnecessarily increase its cost and make the burden of annual maintenance more difficult to bear. Simplicity of design often means a saving of unnecessary expenditure, but it should not mean cheapness of construction. The most expensive parks to maintain are those which have been the most cheaply constructed, for cheap construction means expensive maintenance. Roads and walks should not be made where they are not needed, and they should not be made unnecessarily wide to accommodate possible crowds of another century, but those that are built should be constructed in the most thorough and durable manner possible, in order to reduce the cost of future care. When lawns are made, the work should be done thoroughly; and no tree or shrub should be planted in any manner but the best and in the most carefully prepared soil. Only as little work as possible should be done, but it should be done in the most permanent manner. The best investment a park maker can make is in good soil, for without an abundance of good soil it is impossible to produce large and permanent trees and good grass, and the chief value of any park is in its trees and grass; and if the money which has been spent in disfiguring American parks with unnecessary buildings and miscellaneous architectural terrors had been used in buying loam, they would not now present the dreary ranks of starved and stunted trees and the great patches of wornout turf which too often disfigure them. Only the hardiest trees and shrubs should be used in park planting; for there is no economy in planting trees or shrubs which are liable to be killed any year, partially, if not entirely, by frost or heat or drought, which annually ruin many exotic garden plants, nor is it wise to use in public parks plants which, unless carefully watched, are disfigured every year by insects. It costs a great deal of money to cut out dead and dying branches from trees and shrubs, to remove dead trees and fight insects, but work of this sort must be done, unless the selection of plants used to decorate our parks is made with the greatest care. Fortunately, the trees and shrubs which need the least attention, and are therefore the most economical ones to plant, are the best from an artistic point of view; and to produce large effects and such scenery as painters like to transfer to canvas, no great variety of material is needed. The most restful park scenery, and, therefore, the best, can be obtained by using judiciously a small number of varieties of the hardiest trees and shrubs, and the wise park maker will confine his choice to those species which Nature helps him to select, and which, therefore, stand the best chance of permanent success. No park can be beautiful unless the trees which adorn it are healthy, and no tree is healthy which suffers from uncongenial climatic conditions and insufficient nourishment. Even if they are not inharmonious in a natural combination, the trees and shrubs which need constant pruning to keep them from looking shabby are too expensive for park use and should, therefore, be rejected when broad, natural effects in construction and economy of maintenance are aimed for by the park maker.

The sum of the matter of park construction is to make rural city parks less pretentious and artificial in design and to so construct them that the cost of maintenance will be reduced to the minimum. This will save money and lessen the danger of exhibitions of bad taste and encourage that simplicity which should be the controlling motive of sincere art.--Garden and Forest.

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INFLUENCE OF OCEAN CURRENTS ON CLIMATE.

Few people realize that a very large part of inhabited Europe lies to the north of the latitude which in this country is considered the limit of habitation, says Prof. Ralph S. Tarr, in The Independent. London is situated in the same latitude as southern Labrador, where the inhabitants are scattered in small villages and are mainly summer residents who come there from the more southern lands to engage in fishing. During the winter their ports are closed by ice and navigation is stopped, while toward the British Isles steamers are constantly plying from all directions. The great city of St. Petersburg, which in winter is inaccessible to ships, but in summer enjoys a moderate climate, lies in the same latitude as the northern part of Labrador, where snow falls in every month of the year and where floating ice frequently retards navigation even in midsummer. As a result of the severity of climate the only people who find northern Labrador a place fit for existence are the Eskimo tribes, who win their living under great difficulties almost entirely from the sea. No white men live there, with the exception of some missionaries and the occasional traders.

Everyone knows full well the reason for this difference in the climates of the two lands; the European coasts receive constant supplies of water that has been warmed in southern latitudes and carried northward in the great oceanic circulation and particularly in the Gulf Stream. The west winds, blowing toward the European coast, carry from this warm ocean belt air with higher temperature than that which exists over the land. On the eastern side of the Atlantic in place of a warm ocean current there is the cold Labrador current, which blows from the north and chills the water of the northwestern Atlantic. Therefore, the winds that come from the ocean blow over water that has been cooled, and the prevailing winds, which are from the west, come over the land, which is cool in winter and warm in summer.

One may see these differences in climate and the causes for them even more strikingly exhibited within the Arctic belt than in this case which has been mentioned. The great land area of Greenland, with an area of six or seven hundred thousand square miles, is a highland capped over the greater part of its area with a snow field which completely buries all the land excepting that near the margins. The tongues from this ice field, whose area is some 500,000 square miles, reach into the sea and furnish innumerable icebergs that float away, chilling the waters. Notwithstanding the immense area of ice, the summer climate of the Greenland coast is remarkably moderate, even as far north as Melville Bay. The reason for this is the same as that mentioned for the climatic peculiarities of Europe. A current from the south, probably an eddy from the Gulf Stream, carries water northward along the Greenland coast, thus raising the temperature so that the ice which forms in the sea water and the bergs which float upon its surface are made to disappear during the warm part of the year.

Sailing from the coast of Greenland at about the middle point, near Disco Island, in the early part of September, one leaves a land with a delightfully pleasant climate and warmth almost like that of the early autumn of temperate latitudes, and proceeding south-westward across Davis Straits to Baffin Land, two or three hundred miles southward, there finds himself in the midst of the conditions of early winter. The Greenland coast is not snow covered, plants are still in blossom and the hum of insects is heard; but in this more southern latitude, on the American side, the summer insects have entirely disappeared, only a few belated flowers are seen in protected places and a thin coat of snow covers all the land. Light snow may fall here during any time of the summer; but in spite of these differences Baffin Land is not ice covered, while Greenland is. The ice cap of the interior of Greenland is present less because of the severity of the climate at sea level than from the fact that the air which reaches this land has become humid in crossing the water areas, and further in the fact that the interior is a highland. On the Baffin Land side the interior is less elevated and there is less water to the westward in the direction from which the prevailing winds blow.

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CAUSES OF POVERTY.[1]

[Footnote 1: Report of Richmond Mayo Smith, Franklin H. Giddings, and Fred. W. Holls, Committee on Statistics of the New York Charity Organization Society.--Condensed for Public Opinion.]

The most interesting, and at the same time the most difficult, problem connected with an analysis of cases is to determine the real cause of destitution. It requires great experience and intelligence on the part of workers in charity to give even approximately the fundamental reason why a certain family has come to destitution. To classify cases from records without personal knowledge of each case, and then simply to count the cases, is a very inadequate method of arriving at the truth. The primary difficulty, of course, is to reach a classification. The one adopted by Mr. Warner in his book on American charities is: 1. Causes indicating misconduct; 2. Causes indicating misfortune. Under the first head come drink, immorality, laziness, shiftlessness and inefficiency, crime and dishonesty, a roving disposition. Under the second head come lack of normal support, matters of employment, matters of personal capacity, such as sickness or death in family, etc. The trouble with such a classification is that one cause may lie behind another, as drink is often the cause of lack of employment, of sickness or accident. On the other hand, lack of employment may lead to drink, immorality or laziness.

With the limited number of cases that have been analyzed in this investigation, it would be impossible to expect any very conclusive results. We have endeavored, however, to make up for the small amount of the material by a careful and intelligent analysis, and by approaching the subject from three different points. We have first taken the alleged cause of distress--that is, the reason assigned by the person applying for relief. This, of course, will present the most favorable side, and the one most calculated to excite sympathy. We have, secondly, tabulated the real cause of distress, as gathered by the tabulator from the whole record. This, of course, is the judgment of an outside party, and the emphasis will be laid upon misfortune or misconduct according to the disposition of the investigator. We have, thirdly, the character of the man and woman as gathered from the record. This is supplementary evidence as to the real cause of distress. We go on now to present these three points of view. Loss of employment, 313; sickness or accident, 226; intemperance, 25; insufficient earnings, 52; physical defect or old age, 45; death of wage earner, 40; desertion, 40; other causes and uncertain, 103; total, 844. An attempt was made to follow the example of Mr. Booth and introduce supplementary causes as well as principal causes. About the only result, however, is that sickness often accompanies loss of employment, and that loss of employment often accompanies sickness or accident. It is clearly seen in this whole table how disposed applicants for relief are to attribute their distress to circumstances beyond their control.

In the following table we have an attempt to analyze the real cause of distress, according to the judgment of the tabulator as gathered from the full record. In chronic cases the same cause is apt to appear in the successive applications. It was thought that this might lead to undue accumulation of particular causes. A separate tabulation, therefore, was made for the 500 first applications, and then for the total--832 applications. The table is as follows:

THE REAL CAUSE OF DISTRESS.

First Applications. Total Applications. Number. Percent. Number. Per cent.

Lack of employment. 115 25.0 184 22.1 Sickness or accident. 102 20.4 164 19.7 Physical defects or old age. 27 5.4 42 5.0 Death of wage earner. 18 3.6 30 3.6 Desertion 15 3.0 24 2.9 Intemperance 87 17.4 166 19.9 Shiftlessness 50 10.0 101 12.2 No need 86 17.2 121 14.6

Total 500 100.0 832 100.0

In this table it will be seen that emphasis is laid on misconduct rather than on misfortune. The difference between the two sets of returns is obvious. Where lack of employment and sickness have been alleged as accounting for 62-6/10 per cent. of the total, they are believed by the tabulator to really account for only 41-8/10 per cent. On the other hand, intemperance comes in as the real cause in 19-9/10 per cent.; shiftlessness in 12-2/10 per cent. of the applications, and in 14-6/10 per cent. of the applications it was judged that there was no real need. It is very probable that these judgments are severe, but the result shows how frequently, at least, the personal character is a contributory cause of poverty.

An attempt was made when reading the records to determine the general character of the man and woman--that is, the adult members of the family. Such classification is at the best very rough, and does not give us much information. It may be said that the character was put down as good unless something distinctly to the contrary appeared. The results are given in the following table:

PERSONAL CHARACTER OF MAN AND WOMAN.

Male. Female. Total. Percentage. Good 122 231 353 45 Criminal 15 1 16 2 Insane .. 1 1 .. Intemperate 81 56 137 17 Shiftless 56 52 108 14 Suspicious 13 30 43 6 Untruthful 5 15 20 3 Uncertain 38 65 103 13

Total 330 451 781 100

"Shiftless" includes Male. Female. Total. Professional beggers 5 5 10 Loss of independence 1 3 4 Lack of push 2 1 3 Laziness 1 .. 1 Extravagance .. 2 2 "Worthless" 7 5 12 Prostitute .. 1 1

Total 16 17 33 Shiftless indefinite 40 35 75

Total 56 52 108

It would seem from this table that the judgment of the investigators was lenient. In nearly one-half of the cases the character of the men and women was said to be good.

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Fire tests of cast iron columns, made by order of the city authorities of Hamburg, are described in recent issues of the Deutsche Bauzeitung. The columns were 10 feet 8 inches long, 10.5 inches in diameter and of 1/13 inch or 0.5 inch metal. They were loaded centrally and eccentrically, and some were cased with a fireproof covering. A hydraulic press was placed below the column and its crosshead above it, and then a hinged oven containing twelve large gas burners was clamped about the column. The oven was furnished with apparatus for measuring heat, with peep holes and with a water jet. On an average a load of 3.2 tons per square inch, with a heat of 1,400° F., produced deformation in thirty-five minutes in a centrally loaded column without casing. This showed itself by bulging all round in the middle of the heated part, especially where the metal happened to be thinner; fracture occurred finally in the middle of the thickest point of the bulge. If the load was less, this occurred at a higher temperature. Jets of water had no effect until deformation heat was reached. The casings had the effect of increasing the time before deformation began from half an hour to four or five hours.

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ENGINEERING NOTES.

THE MASSILON (Ohio) Bridge Company has received an order for the construction of a cantilever bridge 562 feet long and 18 feet wide, which is to be built by the New York Dredging Company at Honda, on the Magdalena River, in Colombia, South America.

NAVIGATION ON the Amoo-Darya is to be extended considerably, so that Russian steamers will proceed upward on that river to Feisabad-Kalch, which is only about 200 miles from the scene of the recent Indian frontier troubles.--Uhland's Wochenschrift.

A NEW process of manufacturing artificial stone has been patented in England. The stone is formed in steel moulds, which can be adjusted to any size, shape or design for which the finished stone may be required, and solid blocks weighing several hundred pounds have been easily produced.

M. BERLIER, the well known engineer, has laid before the governments of Spain and Morocco a project for the construction of a tunnel under the Straits of Gibraltar. The execution of this plan would have immense economic consequences, so that its fate will be followed with interest. M. Berlier is the inventor of a new method of subterranean boring.

"THE SALE of the steamers 'Pennsylvania,' 'Ohio,' 'Indiana,' 'Illinois,' and 'Conemaugh,' by the International Navigation Company to the States Steamship Company for the Pacific trade leaves but five steamships flying the American flag crossing the Atlantic Ocean," says The Marine Record. "They are the 'St. Paul,' gross tons 11,629.21; 'St. Louis,' gross tons 11,629.21; 'New York,' gross tons 10,802.61; 'Paris,' gross tons 10,794.86; 'Evelyn,' gross tons 1,963.44, the latter three built in English shipyards and denationalized."

JOHN MURPHY, general manager of the United Traction Company, of Pittsburg, reports the average life of motor gears on his line as two years, and the average life of pinions, nine months. He is employing the gears and pinions of the Simonds Manufacturing Company. The service is an exceedingly severe one, on account of the many grades on the line. The average life of trolley wheels is 1,000 miles, and the conditions under which they operate are quite severe, as the company has on its main line eighteen railroad crossings. A tempered copper wheel is employed.

ACCORDING TO a recent correspondent of The Buffalo Express, in the Pennsylvania oil region during the last year over 300 gas engines have been placed on oil leases and are doing satisfactory work. The engines vary from 10 to 50 horse power. Every big machine shop in the oil regions is turning out gas engines. The machine shops are also using gas engines to drive their own machinery. During the last year twenty of the Standard Oil Company's pipe line pumping stations have been equipped with gas engines. In all the new stations and in old ones where new machinery is needed, the gas engine will be preferred. Where natural gas cannot be had and coal was formerly burned, gasoline is used. The pumping station engines are all provided with electric ignition.

IN A recent issue of The Railway Age is published the following, based upon the last report of the Interstate Commerce Commission: "Last year the railways of the United States carried over 13,000,000,000 passengers one mile. They also carried 95,000,000,000 tons of freight one mile. The total amount paid in dividends on stock was $87,603,371--call it $88,000,000. Of the total earnings of the railways, about 70 per cent. came from freight service and 30 per cent. from passenger service. Let us assume, then, that of the $88,000,000 paid in dividends, 70 per cent., or $61,600,000, was profit on freight service and $26,400,000 was profit on passenger service. Let us drop fractions and call it $62,000,000 from freight and $26,000,000 from passengers. By dividing the passenger profit into the number of passengers carried (13,000,000,000), we find that the railways had to carry a passenger 500 miles in order to earn $1 of profit--or five miles to earn 1 cent. Their average profit, therefore, was less than two-tenths of 1 cent for carrying a passenger (and his baggage) one mile. By dividing the freight profit into the freight mileage (95,000,000,000) we find that the railways had to carry one ton of freight 1,530 miles in order to earn $1, or over fifteen miles to earn 1 cent. The average profit, therefore, was less than one-fifteenth of a cent for carrying a ton of freight (besides loading and unloading it) one mile."

THE RAILROADS in the United States have cost about $60,000 per mile, and probably a considerable percentage of this has not entered into the construction of the railroads and the equipment of same, says "Signal Engineer" in The Railroad Gazette. The railroads of Great Britain have cost about $240,000 a mile, and yet we claim for the United States more luxurious travel than can be found in Great Britain; and this is true so long as the travel is safe. The difference in the cost of construction in the United States and England may be found in the item of safety appliances. The railroads of Great Britain carried during the last year 800,000,000 passengers, with safety to all but five, and this was possible because the railroads, instead of expending their capital in luxurious equipment and passenger stations, chose rather to equip their lines with the most improved signaling and interlocking. The railroad companies of the United States in expending large sums for handsome and convenient terminals and luxurious cars are placing monuments before the public eye which naturally lead to the belief that every appointment of such roads is on the same high plane, and it requires much less expenditure to furnish luxurious equipment to be carried over 1,000 miles of road than it does to equip 10 miles of the 1,000 so as to make it safe; and since the expenditure for safety appliances and permanent way is not seen and felt by the passenger so long as he is carried in safety, it is not, therefore, so prominent before the public gaze as is the handsome station and the palatial car. On one road in Great Britain, having but 2,000 miles of track, there are employed more men in the manufacture and installation of signal work than are employed by all the signal companies and in the signal departments of all the railroads of the United States, where we are now operating about 182,000 miles.

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MISCELLANEOUS NOTES.

ORDERS FOR large quantities of aluminum have been received within the last few weeks by the Pittsburg Reduction Company from the principal foreign nations for the equipment of their armies. The contracts aggregate about fifty tons a month, Russia being the largest consumer.