. Annual report of the New York State College of Agriculture at Cornell University and the Agricultural Experiment Station. New York State College of Agriculture; Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 298 Bulletin 312 Bolley found the following amounts of hard seed in samples of different agricultural seeds: TABLE I Record number of sample and kind of seed Alfalfa No. 464. . Alfalfa No. 474. . Alfalfa No. 1165. . Alfalfa No. 1210. . Alfalfa No. 1420. . Alfalfa No. 1434. . Alfalfa No. 1590. . Alfalfa No. 1594. . Red clover No. 1156 Red clover No.
. Annual report of the New York State College of Agriculture at Cornell University and the Agricultural Experiment Station. New York State College of Agriculture; Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 298 Bulletin 312 Bolley found the following amounts of hard seed in samples of different agricultural seeds: TABLE I Record number of sample and kind of seed Alfalfa No. 464. . Alfalfa No. 474. . Alfalfa No. 1165. . Alfalfa No. 1210. . Alfalfa No. 1420. . Alfalfa No. 1434. . Alfalfa No. 1590. . Alfalfa No. 1594. . Red clover No. 1156 Red clover No. 1159 Red clover No. 1191 Red clover No. 1192 Alsike No. 1435 Number germinated after lo-day test. Number hard at end of 10 days 45 50 12 40 9 25 18 18 15 51 18 16 15 MATERIAL AND METHODS The seeds used in the following experiments were obtained from many sources. Some, as stated above, were furnished by the Illinois Experi- ment Station and some by the Bureau of Plant Industry of the United States Department of Agriculture; other seeds were gathered in and about Ithaca; while still other lots were obtained from seedsmen and from laboratory stock. The acid used was either C. P. sulfuric or commercial sulfuric of about specific gravity. The concentrated acid was used for all the tests. The other apparatus used was such as is found in any ordinary laboratory. When there is only a small amount of seed to be treated, such as the seed from a single head of clover or from a single clover plant, amounting to not more than a few hundred seeds, the following method may be employed: Place the seed in a small homeopathic vial or test tube. Pour on the seed a quantity of concentrated sulfuric acid equal to about five or six times the volume of the seed. Stir the mixture thoroughly with a stirring rod until all seeds are completely covered with the acid. Allow to stand for the time desired at ordinary room temperature. (See tables and conclusions for the length of time.) At the end of t
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