Bulletin, Issue 36Weather Bureau, 1905 - Meteorology, Agricultural |
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Page 7
... give us the best results that they are capable of affording , and will be , perhaps , sufficiently accurate for the needs of the farmer , the merchant , and the statesman , but which can scarcely respond to the exact demands of ...
... give us the best results that they are capable of affording , and will be , perhaps , sufficiently accurate for the needs of the farmer , the merchant , and the statesman , but which can scarcely respond to the exact demands of ...
Page 9
... gives supplementary lists covering the lower order of plants . Therefore it would seem that the present condition of agriculture and the present extent of our available vegetable foods is limited not so much by our climate and soil as ...
... gives supplementary lists covering the lower order of plants . Therefore it would seem that the present condition of agriculture and the present extent of our available vegetable foods is limited not so much by our climate and soil as ...
Page 20
... gives up a larger part , perhaps 50 per cent , by conduction to the adjacent lowest layer of air , which being thus warmed quickly rises and by convection distributes this 50 per cent of heat throughout the atmosphere , whence it is ...
... gives up a larger part , perhaps 50 per cent , by conduction to the adjacent lowest layer of air , which being thus warmed quickly rises and by convection distributes this 50 per cent of heat throughout the atmosphere , whence it is ...
Page 26
... give as proof that the recent most careful experiments concerning the action of various rays upon the production of oxygen by leaves and upon the production of the green coloring matter have only confirmed the discoveries made in 1836 ...
... give as proof that the recent most careful experiments concerning the action of various rays upon the production of oxygen by leaves and upon the production of the green coloring matter have only confirmed the discoveries made in 1836 ...
Page 36
... give the temperatures and the durations in days , as observed by De Candolle for the species experimented upon by him . For three of these he adopts as the starting point of his calculations the following minimum temperatures - viz ...
... give the temperatures and the durations in days , as observed by De Candolle for the species experimented upon by him . For three of these he adopts as the starting point of his calculations the following minimum temperatures - viz ...
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Common terms and phrases
actinometer actinometric degrees agricultural ammonia annual atmosphere August average barley blossoming bulb bushels cent cereals chemical chlorophyll climate Collomia Crataegus crop cultivation date of flowering date of sowing December depth epoch evaporation favorable fertilizers following table frost germination given grain grams grass growth harvest heat hectare Hervé Mangon inches increase influence July July 14 July 23 June June 22 Karl Fritsch kilograms latitude leafing Leguminosa light Linsser maize manure Marié-Davy maximum mean daily temperatures mean temperature meteorological meters method moisture Montsouris nitrates nitrogen oats observations October perature plants plats quantity radiation rain rainfall Réaum ripening roots season seed Sept September September 29 Sesamum shows soil sown species stant sugar sum total sunshine surface tempera Thermal constants thermometer tion ture varieties vegetation vulgaris weight wind winter wheat
Popular passages
Page 158 - ... were floating in the air and were deposited in the pots in which the plants grew.
Page 25 - ... exact degree of its action by day and by night. An atmosphere of carbonic acid gas might also be created, such as is supposed to have existed in the coal period. Then it might be seen to what extent our present vegetation would take an excess of carbon from the air, and if its general existence was inconvenienced by it. Then it might be ascertained what tribes of plants could bear this condition, and what other families could not have existed, supposing that the air had formerly had a very strong...
Page 297 - Bahamas, and Signer Filippo Partatori (Florence, 1866) saying it came from Cat Island, one of the Barbadoes. "But as Anguilla is one of the Barbadoes, and Cat Island one of the Bahamas, it would seem difficult to decide to which group of islands we are indebted for these seed.
Page 298 - ... staple cultivated now was derived. Nor have the improvements made by careful selection of the seed ceased in later years. The staple has kept fully up to the best grades of former days, and the proportion of lint to seed cotton has been increased. Formerly one pound of lint cotton from five pounds of seed cotton of the fine varieties was considered satisfactory.
Page 298 - C, obtained some of these seeds from Georgia and planted them. This crop failed to mature, and the first successful crop of long staple cotton grown in South Carolina was planted in 1790, by William Elliott, on the northwest corner of Hilton Head, on the exact spot where Jean Ribault landed the first colonists and erected a column of stone, claiming the territory for France, a century before the English settled on the coast. Mr. Elliott's crop sold for \oY2A.
Page 66 - Leguminosse are conspicuous as furnishing us with important dyes, eg, indigo, logwood, catechin. The former is obtained principally from different species of the genus Indigofera, and logwood from the Hcematoseylon campechianum, but catechin from the Acacia catechu.
Page 361 - Étude sur la Force chimique contenue dans la lumière du Soleil, la mesure de sa puissance, et la détermination des climats quelle caractérise, par Eug. Marchand. — Paris, Gauthier-Villars, in-8".
Page 261 - July 26 July 27 July 28 July 29 July 30 July 31 Aug. 1 Aug. 2 Aug. 3 Aug. 4 Aug. 5 Aug. 6 Aug. 7 Aug. 8 Aug.
Page 298 - Since then the greatest care has been bestowed upon the selection of the seed, and to such perfection was the staple brought by this means that the crops of some planters were sold not by sample, but by the brand on the bale, as are the finest wines.
Page 25 - Under the yellow glass the varied tint of the leaves was preserved. The red glass impeded the development of the leaves, and produced at the base of the limb, yellow instead of green; in the middle of the upper surface, yellow instead of reddish brown ; and below, a red spot instead of purplish red. With the blue glasses, which allowed some green and yellow to pass, that which was red or yellow in the leaf had spread so that there remained only a green border or edge. Under the nearly pure violet...