CONTENTS. HI 



Page. 



Formaldehyde as an oxidation product of chlorophyll extracts, Warner 222 



The direct assimilation of free nitrogen by plants, Mameli and Pollacci 223 



Influence of organic substances on nitrification and denilrification, Barthcl 225 



Assimilation of inorganic nitrogen compounds by plants, Baudisch 223 



Assimilation of nitrites by mold fungi, II, Kossowicz 223 



Protein transformation in yeast, I, Zaleski and Schataloff 223 



Protein formation. — I, In bulbs of Alliuin cepa, Zaleski and Shatkin 224 



Relation of some Saccharomycctes to inulin, Grafe and Vouk 224 



Investigations on substitution of zinc by other chemical elements, Javilher. . . 224 



Loss or injury of leaves as related to head and grain formation, Schlumberger 224 



Inter])retation of Mendelian factors for flower color, Wheldale and Bassett 224 



Inherit ance of xenia in beans, Daniel 224 



Mutation in reniciUium glancum and Aspergillus nigir, Waterman 225 



A possible mutant which prevents seed formation, Blakeslee and Schulze 225 



A study of semisterility, BelUng 225 



Partial barrenness in Liibeck currants, Zacharias 225 



Notes on the life history of Ribes pallidum, Himmelbaur 225 



FIELD CROPS. 



Farm crop surveys, Montgomery 225 



New work on methods for variety tests, Lehn 226 



The Hamilton County Experiment Farm. — Report for 1913 226 



[Report of J the professor of field husbandry, Zavitz 226 



[Field crop experiments] 226 



Further experiences with the use of so-called stimulants, Stutzer 226 



Kainit and forty per cent potash salt as a top-dressing for cereals, Stutzer 226 



Straw as a fertilizer under various conditions, Bischoff 226 



On the details of development of cereals, Schmidt 227 



The normally formed cereal stalk and its significance, Plahn-Appiani 227 



The influence of age and Ught on the germination of grass seeds, IteiUng : 227 



Some practical hints in breeding grasses, Raum 227 



Alfalfa and sweet clover, Roberts, Kinney, and Ilendrick 227 



Some characteristics of barley kernels as variety constants, Opitz 228 



Spineless cactus unsuited to Arizona, Thornber 228 



A new forage plant, Misson _. 228 



Application of vegetative propagation in breeding forage plants, Vasters 228 



Hard seed coats and fractured seed coats in germination of clover, StegUch. . . . 228 



The effect of weather upon the yield of corn. Smith 229 



Low temperatures in the Sudan and effect on the cotton crop. Hurst 229 



The effect of water on the cultivation of cotton, Ferrar and Hurst 229 



The effect of water on the cultivation of cotton. Hurst and Hughes 230 



Some defects in Crotalaria seeds used in Deli, Honing 230 



Green manuring with sanai in Bihar, Howard 230 



FertiUzer experiment with flax, \\'indirsch 230 



Eight-year variety tests of horse beans, Ziffer 230 



New researches with oats, Denaiffe and Sirodot 230 



Origin of cultivated oats, Trabut 230 



Influence of nitrates on the germinative period of oats, Plate 231 



Experiments with peanuts, Tonnelier 231 



Potato culture 231 



Potatoes, Greene and Maney 232 



Report on the progress and recent work in sugar-beet culture, Hoffmann 232 



Culture and selection of the sugar beet and sugar-beet seed 232 



On the physiology of beet seeds, Plahn-Appiani 232 



Influence of stimulants on the development of sugar beets, Munerati et al 233 



Excessive foliage in sugar beets, Vivien 233 



Dry matter content of stock beets, Neubauer and Hillkowitz 233 



Dorsi ventral structure of the cane stem, Bremekamp 233 



Buying cane by test; some suggestions, Bourbakis 233 



Green manures for tobacco, Vigiani 233 



A new method with the tobacco crop, Roman 233 



The progressive development of the wheat kernel, Thatcher 234 



Influence of external conditions on heredity, Fruwirth 234 



Comparison of spikes in a mutation variety of wheat, Passerini 234 



Production of new varieties [of wheat] by crossing, Passerini 234 



