Botanical Abstracts

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Williams & Wilkins, 1920 - Botany
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Page 1 - BOTANICAL ABSTRACTS A monthly serial furnishing abstracts and citations of publications in the international field of botany in its broadest sense, beginning with the year 1918 PUBLISHED MONTHLY UNDER THE DIRECTION OP THE BOARD OF CONTROL OF BOTANICAL ABSTRACTS, INC.
Page 150 - ... this field. Are You Interested in analytical methods, in the acidity of your garden soil, in enzymes, in blood and the determination of acidosis. in modern methods of handling protein solutions, in the cultivation and study of bacteria, yeasts, molds and tissue, in autolysis, hydrogen ion catalyses, colloids, the digestive system, filtration, plant distribution, natural waters, the hydrogen ion concentration of biological fluids? If so, you will need the methods and the references found in The...
Page 4 - Sexual reproduction can be attained by the plant only when it is exposed to a specifically favorable length of day, the requirements in this particular varying widely with the species and variety; and exposure to a length of day unfavorable to reproduction but favorable to growth tends to produce gigantism or indefinite continuation of vegetative development; while exposure to a length of day favorable alike to sexual reproduction and to vegetative development extends the period of sexual reproduction...
Page 98 - On the four visible ingredients in banded bituminous coal; studies in the composition of coal, No.
Page 232 - ... danger of injury to the grass. A conspicuous blackening of the lawn which follows each application soon disappears if the grass is growing vigorously. Of the other common lawn weeds, some are killed while others are but slightly injured by the spraying. Unfortunately, white clover, also, is killed. Spraying should be supplemented by the use of fertilizers and the application of grass seed in the spring and fall of each year. With proper management, it is necessary to spray only about every third...
Page 247 - GJ (8) 1919. BORDERED PITS IN DOUGLAS FIR! A STUDY OF THE POSITION OF THE TORUS IN MOUNTAIN AND LOWLAND SPECIMENS IN RELATION TO CREOSOTE PENETRATION. Jour. Forestry 17: 813-822, illus.
Page 150 - ... knowledge of soil fertility. The study of the mineral and organic constituents of soils, soil gases, soil water as a solvent of soil material, soil colloids, the transformation of commercial plant foods in soils, questions that deal with the fundamental facts of soil fertility and productivity, are given consideration. The phenomena concerning soil micro-organisms, such as bacteria, molds, protozoa, and algae, receive careful attention. Manuscript submitted for publication and communications...
Page 285 - Studies in the metabolism of Actinomycetes. IV. Changes in reaction as a result of the growth of actinomycetes upon culture media.
Page 120 - Simultaneous Acid and Alkaline Bacterial Fermentations from Dextrose and the Salts of Organic Acids Respectively. Journal of Infectious Diseases, 23, 188.
Page 110 - It is not optically isomeric with pinite of Maquenne, which is the methyl dextro-inositol, possessing a different melting point and optical rotation. It is apparently identical with Tanret's quebrachite and has been previously recorded for three plants only- — Aspidosperma querbracho (Apocyanceae), Hevea brasiliensis (Euphorbiaceae) and Grevillea robusta (Proteaceae).

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