1924-10-11 — Page 12

THE CHINA MAIL.

+ SATURDAY, OCTOBER 11, 1924, 13

Visiting Round National Parks

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ر کشور در ادارت کمه و وید

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Our National Parks and Monuments Among the Most Interesting in, the World-Fine Trails-and- Auto Roads Foreign Jnterest.

[By KATHERINE LOUISE SMITH.J

MANY distinguished

through the Parks in summer and in winter for sorie parks are open the whole year. Last year the late Prest dant Harding and his party visited the Yellowstone and Zion National Parks and expected to stop at the Yoremite. Every summer distinguished actors, moving picture people, professors, noted artists, singers, lecturers, stop at the National Parks, and thirty-four-permita for taking moving pietures were issued last year.

The ruins of our Southwest-that-have- been set aside for monumenta are favourite places for scientists to visit, and they also afford good backgrounds for movie scenes, an they are in stretches of desert, characteristic wild country of Arizoņu, Colorado and nearby Staten.

Automobiles Popular.

All visitors do not travel by rail and it is becoming more and more popular to go to and through the Parks by auto. When the National Park-to-Purk High-

way is completed there will be more persons who will take this method of kecing the country. Computations show that sixty per cent of the visitors last summer entered the Parks by nato- mobile. It will be seen by this that good rants are an essential part of the National Parks demands. But the roads inside the Parks are not so good as the FOR leading to them which are built by State and Federal nid, The Yellow stone Park probably has the best roads, and road making is going on here and In other Parks. Glacier Park has some good roads and in this Park work is going on to connect the two sides by a transmountain road. This is an in- .portant but laborious undertaking. But many Purks, especially new ones like the Rocky Mountain National Park. need much and protracted work on roads that will take the automobilist from ons attraction to another.

Trails

An Interesting Feature: So many persons walk or go by horse

ANONAL MAYUMENT

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campers. Wild. He conservation is another role in which National Parks play an important part. The Yellow- stone has supplied the game needs, of several zoological parks in our large cities. This park abounds'in elk and it has the largest herd of buffaloes in the back through some of the Parks that glacier whose ice is filled with ossified in asking Washington, to preserve other Interior, but this is not so. While there lovers of animals secured the 31t. Mc- United States. The efforts of many trail making is an interesting feature grasshoppers which may have been pinces pertaining to an early rose that are nineteen parks administered by the Kinley National Park as a came of the service. New trails are in pro- there from prehistorie uges. cess of construction in most of these planned to open a summer school of wonders. Under President Harding we ment of the Interior, Chickamauga, mountain sheep have been seen by the It is once inhabited this continent, or natural National Park Service of the Depart reserve. As many as eight hundred districts, nor is this confined to the research for scientista. newer playgrounds, for last year in the stone School of National Research will set zalde by proclamation the Cycad burg, Lincoln's Birthplace and Gullford is abundant In Crater Lake National This Yellow gained several National Monuments. He Antietam, Shiloh, Gettysburg, Vicks Superintendent in one trip. Wild Me Yellowstone Park the Howard Eaten be open to men and women who want to National Monument in South Dakota; Courthouse-so-called military Parke-Park. Trail was finished and dedicated. This extend their knowledge of zoology, the Aztee Buin National Monument in are administered by the War Depart abound, but the large area here, also, Deer, elk, foxes and wolves trail is one hundred. and fifty-seven grology, botany and natural history miles long. Howard Eaten, and his beyond the class room. The Fort Yellow Monument in Utah and Colorado; the

New Mexico; the Hovenweep Nationalment. In a similar way while the prevents proper supervision. brothers had for years' a ranch open to

National Parks Service looks after atone Barracks and ground before the Pinnacles National Monument summer visitors near Wolf, Montana, fort will be leased and school will be fornis; the Pipe Springs National Monu- twenty-two to be exact-there are Cali- many of our National Monuments-- and Howard Eaton took parties through conducted no that students from Univer- the Yellowstone and other Parks. Many sities can come here for specialized National Monument in Utah; the Bryce the Department of Agriculture and ment in Arizona; the Timpanogos Cave thirteen Monuments under the care of distinguished visitors were present at work. In fact the the dedication of this new trail to the afford wonderful educational advantages the Mound City Group National Monument, among these last in the newly National Parks Canyon National Monument in Utah; three administered by the War Depart famous guide and scout who diede all sorts and conditions of people ment in Ohio (this consists of Indian created Mound City Group. recently,

from Boy Soap Camp Fire Girls', mounds), on the Camp Sherman Mili- organization Linet Members. tary Reservation. President Coolidge hun set aside, the Carlsbad National Cave Monument in New Mexico,

Under Charge Various Departments.

Mast persons think all the National Parks and National Monuments are under the care of the Department of the

Some of the National Parks will un- doubtedly be enlarged in the near future. The Yosemite and Sequoia") National Parks need additional acreage, and the Yellowstone will probably, he made larger by the addition of the Glacier country, which holds a mighty

*itional MonumentM.

The

Our National Monuments are equally as inter and instructive. Monument our South-west attract scientists who are studying prehistoric civilizations, and who are instrumental

Many things must be considered in connection with the upkeep of the areas. our Government has set aside for the enjoyment of the people. Forest growth must be taken into consideration and proper means employed to extinguish fires which may start from many sources, among them the carelessness of

Foreign Countries Interested, Latin America in particular is inter- ested in our National Parks, and every summer seen some one from those coun-

grounds. tries visiting one or more of our play- The King of Belgium after his visit a few years ago immediately act aside a tract for a Park on his retur

home, and Japan has sent an envoy to. visit our Parka to gain ideas. The Republic of Poland and even the Malay States have written for details as to our Park administration. So the United States can feel it is taking its place in. conserving and increasing the world' natural beauties.

Successful Results Along This Line Have Been

Achieved Slower Planes Required-

Mosquitoes Also Fought by Fliers.

[By NORMAN C. MeLOUD.]

possible a profitable increase in the yield of seed cotton, except where the land is of low productivity. In a com- parison on adjacent plantations the fields dusted with calefam arsenate by airplane showed an increase of 750 pounds per acre, of seed cotton, over) those that were not poisoned."

Yields Good Proßt.

THE latest triumph of the airplane is in connection with the fight against ke boll weevil-that most destructive meray of the great cotton crop of the father states. In this combat the ane has scored a distinct victory, hrough the efforts of scientists repre- enting the United. States Department

Agriculture, she ravages of the ball weevil have The moderate cost of airplane trest- Jõen so disastrons as to have called ment is emphasized by the Government ith the most determined efforts by "The airplanes were supplied and man- ence for the control and destruction nod by the Air Service of the United Tithia insect pest. Scores of methods States Army," the statement says, "For 50 materials have been employed as the reason the cost of the treatment is Asures of protection. Thorough teste not definitely known. It la estimated, fall remedies have brought the officia! however, that the expense was approxi atement that the Department of mately five dollars an acre. At present riculture has found calcium arsenate prices of cotton the gain from, dusting d most effective polson and a specially was more than $76 an mere. It la uipped airplane the most satisfactory thought that the cost of the work in less ans of applying the poison to the whom the airplane is used than when the Started field

dusting is done with greund machines." i the past few years,” says tho Typical scenes connected with the mone, "B. B. Goad, in charge of ] work of dusting by tanani of airplanes botton insect investigations at the are shown in some of the accompanying prernment Station at Tallalah, Lillustrations. One of these shows the madis extensive tests of various dusting" plans in 'action over 'long hans, and of many methods of appli- stretch of cotton, flying about fiften Koru Ramila Kave shows that dust-feet above the plants. In this and other **with calcium arsenate will make i pictures the trail of calcium arsenate

AIRPLANES FIGHTE BOLL WEEVIL

THE BOLL”. WEEV

rise quickly to avoid obstructions.

One of the advantages of the plane, of moderate speed would" be to make better vision possible for the occupants the charged dust settling toward the

of the plane. Another helpful factor earth, or blown that way by the swift would be the reduction of the waste currents of air from the planes, la resulting from overrunning the area at drawn into close contact with the plant the ends of the Belds.. Still another and held there. The charge of electri-point made by the experts is that lower city on the dust is thought to be pre-

spoed would involve less danger to the duced by the friction of the plane with pilot in making landings The planes the air and by the friction of the dust now used have a landing speed of about particles with the air current, which has 75 miles an hour. It is thought desir. a speed of 125 to 135 miles an hour. l able to have a plane with

The Government authorities are now speed of fifty to sixty miles and a land interested In the development of siring speed of twenty to twenty-five miles planes especially adapted to this dust- In the experimental dusting of lest Ing work, It is stated that already summer the planes were equipped with some manufacturers of planes are tak- Liberty motors. 423 horse-power. Ing an interest in the problems. These The design of the machines handicapped makars are expected to make experithe work as to woonomy for the reason mental changes in their machines, since that the planes could carry only 360 it has been demonstrated that the operation is financially practicable and effective. 7 ent

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dust is shown as it is blown down into was first practised on a large scale, it the plants behind the machine. The plane was found necessary to do the work at flies at a speed of about ninety miles night, when the molature on the plants an hour and in each trip across the field would cause the dust particles to stick? the poison is spread over a strip from It was soon found, however, that dust 180 to 300 feet in width. On this pants applied by airplane in the daytime the machine ased less than four rounds would stick to the planta and that of calcium arsenate to the acra, a con- pound of material would go much fur-

Se Blow Moving Planes Best." siderable saving

Lower speed is one of the required compared with the ordinary ground machine. The larger and when the leaves ware? durap...

ther than when applied by other means factors. The use of speedy war planes Belds simplify the process of dusting, Investigation has led the experimenters

for cotton dusting is suggestive of using because of permitting longer continuous to bollave the better effect, is gained which should be done by a five ton truck

a costly limonaine for doing the work,

been achieved in small field operations, highly charged. ith positive clericity-le to do away with-high speed wood build fights hat satisfactory results have also because the particles of the powder, are Mr. Coed Fnsists that what is needed Can Work In Day HS while the plantar carry. A negative planes affording maximum efic When dusting of plants to kid insests Jcharge Bince opposite charge strane, i intermedista, speed, but with power to mcy at

travelling

scientists of the Department of Agri- culture declare that calciom arsenate controis such miscellaneous · cotton insects as grasshoppers, caterpillars and

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.Ground machines have the handicap of physical inability to move in many areas where treatment is required. With its complete independence of the "condition of the surface the airplane can be used when the other machines ara helplean. Experience at one of the experimental stations in Louisiana kas fully demonstrated this superiority of aircraft At this station there was a heavy infestation of the leaf worm in- the latter part of last August." Just after the fields had been given an after- noon dusting a rainstorm came on, with a heavy downpour which washed off all the poison, rendering renewed applica.. tion an immediate necessity, The in- portance of prompt action was emphasized by the rapidity with which the leaf worm eats the leaves and destroys the plants.

The rain which necessitated redusting. had the additional effect of soaking the ground to an extent that the use of ground-machines was out of the ques- tion. In the soft and spongy coil these machines could not have been moved over the surface. In this emergency the airplane was the sole recourse, and the application of the second cost of dast-poison was achieved the following day, as soon the landing Field was dry enough to permit the plane to make a start. Within 48 minutes the plane- covered a field of 111 acres. It is firmly baltoved that the prompt action made possible by the use of the airplane pro- vent heavy damage that would have resulted the owner of the field had been forced to wait until the ground: of machines operated on the surface. had become suficiently dry for the use

Planes Fight Mosquitoes. Malaria mosquitoes are also the sub- Jeet of airplane attack. In connection with the experimental work in cotton dusting the experts have carried on additional experiments with the co- operation of the Mosquito Laboratory of the United States Bureau of Entom logy. This work involved the distribu- tion of polson dust over swamps and lake areas whers the malaria mosquito constitutes a menace to human health. pounds of calcium arianate at a london In the past it had been determined quantity sumelant for not more than that by using a very small amount per three minutes of setual dating. It.in acre of water surface, the distribution figured that by using the same moter of poison applications, will practically and a machine of different design it will pifminate the breeding of these mon- be possible to carry 2,000 pounits of the quitoes without danger dust at a load. The advantage of this animals. The chief problem has been to almost six times as much area may be Experimente Indicate that the airplane additional expacity is readily seen, sines fhad an effetive means of distribution.

Othery Porter Caftrolled age and that the possibilities of the plane dusted at a single trip, a press comes in afford solution of this problem

object of attack in these experimenta, portant

While the boll worril ta then pricipal" inchis connection are exceedingly. Im-

man or