728 EXPERIMENT STATlOiSr RECORD. 



microchemistry of plant products. A chapter is devoted to the detection of 

 adulterations in foods and drugs which is designed to give practical suggestions 

 in pure food and drug investigations. 



Experiments on the fall and renewal of leaves, C. Flammarion {Bui. Mens. 

 Off. Renseig. Agr. [Paris], 6 {1901), No. 11, pp. 1327, 1328).— In 1891 the author 

 planted a number of acorns of Qucrciis rohur in pots, and the seedlings have 

 since been protected from winter conditions, with the result that the young 

 trees have changed their habit of growth and resemble evergreen species, in 

 that the young leaves now appear before the fall of the old ones. 



Mendel's law of dominance in Viola, PI Brainerd {Rliodora, 9 {1907), No. 

 107, pp. 211-216, figs. 2). — Some experiments with violets are described in 

 which, in some particulars at least, Mendel's law of dominance seems to find 

 illustration. The special instance described in these experiments is that re- 

 lating to inheritance of color of the capsules and seeds of what is believed to be 

 a hybrid between Viola hirsuta and T'. papilionacca. 



By applying analytical methods to over 30 putative violet hybrids, the off- 

 spring were found to segregate in accordance with ]\Iendelian principles. 



The author's work relative to the hybrids of Viola having been questioned, 

 an examination of 18 species of stendess violets was made. From this it was 

 found that all but two of these species produced seed freely from the petalif- 

 erous flowers, in some instances over 300 such seeds being produced by a single 

 plant. 



The experimental production of plant monstrosities, L. Daniel {Trar. Sci. 

 Univ. Rcn)ics, 5 {1906), No. 2, pp. 81-98, figs. 10). — A review of literature is 

 given, together with a study of various teratological forms, made to determine 

 f-.ome of the contributing causes that would account for their origin. The fac- 

 tors considered included the effect of overnutrition, pruning, mutilation, and 

 other means of disturbing the efiuilil)rium of plants, as shown by their subse- 

 quent development. 



On the assimilation and respiration of some grafted plants, L. Daniel 

 {Trav. Sci. Univ. Rcnnes, 5 {1906), No. 2, pp. 77, 78). — On account of the stink- 

 ing variations sometimes noted in the growth of grafted plants when compared 

 with seedlings, the author made a preliminary study of the assimilation and 

 respiration of specimens of Artemisia and I'lagius grafted upon Anthemis .stock, 

 comjiarisons l)eing made with check plants. In the case of the Artemisia i)Iants 

 the assimilation of the carbon dloxid and its respiration were less than in the 

 checks, but with the Plagius the grafted plants decomposed more carbon dioxid 

 and liberated more than double the amount of that gas than did the check 

 plants. The experiments are only preliminary and can not be considered as 

 offering general conclusions. 



Variations in the composition and comparative resistance of grafted and 

 nongrafted plants, C. Laurent {Trav. 8ci. Univ. Rcnnes, 5 {1906), [No. 1], 

 pp. G7-65, figs. 2). — In continuation of earlier work analyses are reported of 

 red and white grape musts from different localities and of white and purple 

 cabbage. Grafting was found to increase the crude fiber and saccharifiable 

 matter in cabbage and to diminish the total ash, increasing S(mie of the ash 

 constituents and diminishing others. With grapes, different samples showed 

 differences in composition as well as in resistance to fungus diseases. 



On the variation in composition of certain food plants after grafting, 

 C. Laurent {Trav. 8ci. Univ. Rennes, 5 {1906), [Xo. 71. pp. /'/7-/J7).— Analyses 

 of stems and leaves of grafted and ungrafted cabbage and of seeds of grafted 

 and ungrafted beans are re])orted from which the conclusion was drawn that 

 grafting affects the chemical composition according to the functional capacity 



