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12 > Image 12 of Annual report. 1915

Part of Kentucky Agricultural Experiment Station

t ` . @2 4 I E Kentucky Agricultural Experiment Station. 3 (Circular 5), and the translocation of mineral matter of plants. _ ,Q (Journal Agr. Research, Vol. 5, No. 11.) Q The most striking fact brought out thus far by Dr. Buckner s V .\j studies on the translocation of the mineral matter of the seed and , tuber during the growth of the seedling is the retention in the cotyledons and tuber, respectively, of considerable amounts of the mineral matter, ranging from 46.66 per cent. in the garden 1 _ bean and 38.66 per cent. in corn to 50.33 per cent. in the potato tuber. This Dr. Buckner thinks probably Ends its explanation in the necessity for definite amountsiof the various mineral con- stituents to promote the catabolie changes occurring in the eotyledon and tuber during sprouting. So far as could be ascer- tained, there were no very striking diderences in the quantities of the several mineral constituents translocated and no marked I selective influence shown by the roots, stem and leaves of the 1 growing seedling, for any particular mineral reserve material contained in the seed or tuber. Among investigations undertaken with funds other than the i Adams Fund may be mentioned the feeding studies on young Y chicks recently carried on by Messrs. Buckner, Nollau and Kastle. These are the most important studies on poultry ever under- p taken at this Experiment Station and the results have been pub- ' lished in the December number of the American Journal of i Physiology under the title of "The Feeding of Young Chicks on Grain Mixtures of High and Low Lysine Content." On mashes and grain mixtures containing relatively large amounts of ly- sine, a diamino caproic acid, the young chicks were found to grow and thrive, whereas on mashes and grain mixtures relatively poor in this amino-acid, chicks of the same lot were greatly if stunted in their growth. This investigation opens up an entirely 1 _ new 1'ield in the feeding and rearing of the young chick and puts the utilization of various commercial feeding stuffs upon a new and strictly scientific basis. In this connection, a large number of analyses of commercial feeding stuffs have been made by Mr. Nollau, having for their object to determine the amino-acid con- tent of the various proteins contained in such feeding stuffs. 1 r F