Science, Volumen45John Michels (Journalist) American Association for the Advancement of Science, 1917 Since Jan. 1901 the official proceedings and most of the papers of the American Association for the Advancement of Science have been included in Science. |
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Página 21
... of some experiments on Drosophila which one of us was performing , it became necessary to observe the beginning of oviposition . It is impossible to see the eggs and difficult to see the larvæ in the mass JANUARY 5 , 1917 ] 21 SCIENCE.
... of some experiments on Drosophila which one of us was performing , it became necessary to observe the beginning of oviposition . It is impossible to see the eggs and difficult to see the larvæ in the mass JANUARY 5 , 1917 ] 21 SCIENCE.
Página 22
... larvæ can be seen working in the medium . The average number of days required to com- plete the cycle on the agar from egg to adult is about thirteen . This is three days longer than the average number of days required on the ordinary ...
... larvæ can be seen working in the medium . The average number of days required to com- plete the cycle on the agar from egg to adult is about thirteen . This is three days longer than the average number of days required on the ordinary ...
Página 221
... larvæ or worms several times a week , which strengthens the fish and often advances the mating season . If the fish have been properly fed in the fall , spawning may begin as early as January or February if the aquarium is in a fairly ...
... larvæ or worms several times a week , which strengthens the fish and often advances the mating season . If the fish have been properly fed in the fall , spawning may begin as early as January or February if the aquarium is in a fairly ...
Página 337
... larvæ and their own weaker brothers , while the source of the food supply of the boatmen2 is found in the brown , sedimentary material on the bottom of the pool . This they scoop up with the flat rakes of their fore - legs . These rakes ...
... larvæ and their own weaker brothers , while the source of the food supply of the boatmen2 is found in the brown , sedimentary material on the bottom of the pool . This they scoop up with the flat rakes of their fore - legs . These rakes ...
Página 489
... Larva : L. M. PEAIRS . The Popular Names of North American Plants : O. A. STEVENS . Faunal Conditions in South Georgia Is- lands : I. A. LUKE Scientific Books : - Les Sciences Biologiques Appliquées à l'Agriculture : DR . L. O. HOWARD ...
... Larva : L. M. PEAIRS . The Popular Names of North American Plants : O. A. STEVENS . Faunal Conditions in South Georgia Is- lands : I. A. LUKE Scientific Books : - Les Sciences Biologiques Appliquées à l'Agriculture : DR . L. O. HOWARD ...
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Academy of Sciences acid active agriculture algæ American Association animals appointed April Asso asymmetric asymmetric synthesis atom biological botany Brooklyn Botanic Garden Bureau California cent chairman chemical chemist chemistry Chicago College Columbia University committee Crocker Land Expedition December 28 director discussion disease educational effect elected ence engineering experiments fact fessor field Geological given Harvard Harvard University ical important industrial Institute interest investigation John laboratory larvæ lectures Lick Observatory material mathematics Medical School medicine meeting ment method Museum National nature nebulæ Observatory observed optically active orbits organization papers physical plants practical present president problems production Professor recent relation SCIENCE FRIDAY scientific secretary Section sity Society soil solution species stars stations T. H. Morgan theory tion ture United Univer University versity Washington William York
Pasajes populares
Página 446 - I asserted — and I repeat — that a man has no reason to be ashamed of having an ape for his grandfather. If there were an ancestor whom I should feel shame in recalling, it would rather be a man — a man of restless and versatile intellect — who, not content with an equivocal...
Página 273 - The astronomer discovers that geometry, a pure abstraction of the human mind, is the measure of planetary motion. The chemist finds proportions and intelligible method throughout matter; and science is nothing but the finding of analogy, identity, in the most remote parts.
Página 254 - Majesty and the United States of America for the protection of Migratory Birds in Canada and the United States.
Página 58 - Education and on Health and Public Instruction of the American Medical Association, the Federation of State Medical Boards of the United States and the Association of American Medical Colleges, will be held at the Congress Hotel, Chicago, on February 5 and 6, 1917.
Página 631 - An act to save daylight and to provide standard time for the United States', approved March 19, 1918, as amended, shall be advanced one hour.
Página 408 - RICHARDS, professor of mechanical engineering and head of the department since 1911, has been appointed dean of the College of Engineering and director of the Engineering Experiment Station of the University of Illinois to succeed Dr. WF M. Goss who has resigned to become president of the Railway Car Manufacturers
Página 273 - Engineers, The American Society of Mechanical Engineers, and the American Institute of Electrical Engineers.
Página 446 - Mr. Huxley slowly and deliberately arose. A slight, tall figure, stern and pale, very quiet and very grave, he stood before us and spoke those tremendous words — words which no one seems sure of now, nor, I think, could remember just after they were spoken, for their meaning took away our breath, though it left us in no doubt as to what it was. He was not ashamed to have a monkey for his ancestor; but he would be ashamed to be connected with a man who used great gifts to obscure the truth. No one...
Página 404 - Council were created a Body Corporate under the name of "The Imperial Trust for the Encouragement of Scientific and Industrial Research " to hold and dispose of money and other property for the purposes of the Committee.
Página 426 - That there be formed a National Research Council, whose purpose shall be to bring into cooperation existing governmental, educational, industrial, and other research organizations, with the object of encouraging the investigation of natural phenomena, the increased use of scientific research in the development of American industries, the employment of scientific methods in strengthening the national defense, and such other applications of science as will promote the national security and welfare...