Botanical Abstracts, Volume 12Williams & Wilkins, 1923 |
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Pagina 633
... observations on this leafspot are connected with the different phases of the experimental work and form a commentary on the conditions which increased and dimin- ished the virulence of the disease . There are observations on fungous ...
... observations on this leafspot are connected with the different phases of the experimental work and form a commentary on the conditions which increased and dimin- ished the virulence of the disease . There are observations on fungous ...
Pagina 647
... observations and cultural experiments extending over 4 years . - Methods for colorimetric determination of H - ion ... observed in extracts in contact with soil , but very little in filtered extracts . No essential differences in ...
... observations and cultural experiments extending over 4 years . - Methods for colorimetric determination of H - ion ... observed in extracts in contact with soil , but very little in filtered extracts . No essential differences in ...
Pagina 648
... observed . Variations in reaction during growth were traceable to the source of nitrogen , the reaction becoming acid if nitrogen were furnished as ammonia , and alkaline if furnished as nitrate . In a " physiologically neutral ...
... observed . Variations in reaction during growth were traceable to the source of nitrogen , the reaction becoming acid if nitrogen were furnished as ammonia , and alkaline if furnished as nitrate . In a " physiologically neutral ...
Pagina 649
... Observations sur l'optimum d'altitude pour la coloration des fleurs . [ Observations on the optimum altitude for the coloration of flowers . ] Compt . Rend . Acad . Sci . Paris 174 : 1723-1724 . 1922. - A study is made of Hepatica ...
... Observations sur l'optimum d'altitude pour la coloration des fleurs . [ Observations on the optimum altitude for the coloration of flowers . ] Compt . Rend . Acad . Sci . Paris 174 : 1723-1724 . 1922. - A study is made of Hepatica ...
Pagina 651
... observed one . It has been found that the distribution of species over an area follows the laws of probability ; or , mathematically stated , if n individuals of a species are found n Y times on the area the probability , a , of finding ...
... observed one . It has been found that the distribution of species over an area follows the laws of probability ; or , mathematically stated , if n individuals of a species are found n Y times on the area the probability , a , of finding ...
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Populaire passages
Pagina 741 - Gazette, vol. 74 ] [442 expected under this assumption, but it is preferred to use the theoretical value until further data on this point are available. It is assumed that the magnitude of the excess depression is a measure of the quantity of water held in such a way as to be unavailable for the solution of the sugar. The values obtained may be calculated to percentage "bound
Pagina 785 - 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.
Pagina 642 - Traité des arbres et arbustes qui se cultivent en France en pleine terre...
Pagina 769 - there is no evidence of the presence of soluble toxins in normally aerated soils sufficiently supplied with plant food and with calcium carbonate, but toxins may occur on 'sour* soils badly aerated and lacking in calcium carbonate, or on other exhausted soils.
Pagina 913 - Les dispositions de la loi du 28 janvier 1921 autorisant provisoirement le Gouvernement à s'opposer à l'exploitation excessive de certains bois et de certaines forêts appartenant à des particuliers...
Pagina 821 - Is the whole of Mendelism perhaps nothing but an establishment of very many chromosomical irregularities, disturbances or diseases of enormously practical and theoretical importance but without deeper value for an understanding of the "normal...
Pagina 666 - WALDRON, LR, 1921. — Inheritance of Rust Resistance in a Family Derived from a Cross Between Durum and Common Wheat.
Pagina 903 - Untersuchungen über Echtfärbung der Zellkerne mit künstlichen Beizenfarbstoffen und die Theorie des histologischen Färbeprozesses mit gelösten Lacken von Prof.
Pagina 635 - List of Serials Currently Received in the Library of the US Department of Agriculture: Exclusive of US Government Publications and Publications of the State Agricultural Colleges and Experiment Stations: Arranged by Title, by Subject, and by Region.
Pagina 1111 - BRITTON, NL and JN ROSE. The Cactaceae : Descriptions and illustrations of plants of the cactus family.