About the Book
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1914 edition. Excerpt: ...value. Butterflies have never been observed to trip a flower during the course of these studies. Rain or wind causes but few alfalfa flowers to become tripped. Automatic tripping with consequent self-pollination probably results in the setting of as many pods as does tripping by insect visitors, at least in the West. This conclusion is also in accord with the observation that excellent seed crops are produced in sections where bumblebees and other insects capable of tripping alfalfa flowers are decidedly scarce.. O WASHINGTON' I GOVERNMENT PBIXTIXG OFFICS I 1914 INDEX. Black-face figures denote the number of the Department bulletin referred to; light-face figures show the page in the bulletin. Abort Lake, location, formation, description, area, 54, 25. Abies--balsamea. See Fir, balsam. spp., distinguishing characters, 55, 24, 27. Absorption factors, relation to saline solution, 61, 21-24. Aerial tubers, potato, result of disease, 64, 33-34, 41. Agglutination testa with blood of vaccinated horses, 70, 9-13. Agriculture Department, orange shipments from Florida, investigations, scope of work, etc., 63, 13-14, 47, 48-i9. Air tank, pumping capacity under various pressures, 57, 21. Alabama, Tbeef calves, raising and fattening, 73,1-11. Alfalfa--climatic relations to seed production, 75, 1-2, 20, 23-24, 26, 28. cross-pollination, relation to seed production, 75,16-18. flower, structure and pollination, previous investigations, 75, 2-7. flower, structure, technical description. 75, 7-9. flowers, tripping, artificial agencies and force necessary, 75, 25, 27-28. flowers, tripping, automatic, results, 75, 19-24. pasture for hogs, 68, 12, 18, 26. pods, effect of polen from different sources. 75,16-18. pods, formation under varying conditions, 75, ..
