19161 CONTENTS. 



m 



Page. 



Multiple leaves m clover, Perriraz 329 



Variations in flowers of Iris, Pirotta !!!!!!!! 329 



On the inheritance of the flowering time in peas and rice. Hoshino '.'. 329 



A bud variation of the scarlet runner, Reinke ]] 329 



Amphiclinous hybrids, De Vries !..!!!! 330 



Recent mutations of Solanum commersonii, Labergerie 330 



A case of leaf etiolation due to cold, Gassner 33O 



Experimental production of tuberous growth at expense of the root, Molliard . . 330 



Physiological unity constituted by a leaf with its internode, Kuijper 330 



The physiology of stomata in Saccharum officinarum, Kuijper 330 



Observations on transpiration in sugar cane, Kuijper 331 



Sap ascent, Maillefer 331 



A new theory of gum flow, Sorauer 33I 



The artificial absorption of liquids by aerial parts of plants, Acqua 331 



Albuminous bodies in cells as ergastic substances, Meyer 332 



The physiological theory of chlorophyll, Pringsheim 332 



Artificial hastening by pressure of water absorption by seeds, De Vries 332 



The action of hydrogen ions and some anions on Avena saliva, Plate 332 



Influence of chlorids on germinative period of Avena saliva, Plate 332 



Hydrocyanic acid formation in the germination of seeds, III, IV, Ravenna. . . 332 



Experiments on the physiology of indigo-yielding glucosids, Pamell 333 



The mode of formation of anthocyanin pigments in flowers, Guilliermond 333 



The coloring matters of chromatophores, Kylin 333 



Alkaloid formation in plants.— I, Protein and nicotin, Rasmussen 333 



The morning and evening content of mulberry leaves, Pigorini 333 



Plant enzyms. — IV, Invertase of potato leaves, Doby 334 



The occvurence of urease in legume nodules and other plant parts, Benjamin. . 334 



A new nitrate-forming organism, Joshi 334 



Influence of ultraviolet rays on reproductive organs of plants, Montemartini. . 334 



FIELD CHOPS. 



Experiments on the influence of selection, Fruwirth 334 



[Work with field crops], Boss 335 



[Work with field crops], Taggart, Kerr, Garrett, and Quereau 336 



Suggestions for use of fertilizers for tobacco and onions for 1916, Haskins 338 



Com in Montana, Atkinson and Wilson 338 



Com : Varieties, ear-row, and limiting factor tests, Hutchinson 338 



Field corn in western Washington , Stookey 339 



Wilt-resistant varieties of cotton, Cauthen 339 



Methods and results of breeding flax, Althauzen 339 



Natal grass, a southern perennial hay crop, Tracy 339 



Field peas, Robb 340 



Effect of climate on hydrocyanic-acid content of sorghum, Willaman and West . . 340 



Nitrogen content of the wheat of the Transvolga region , Tulaikov 340 



Further observations on combating weeds and kainit, Remy and Vasters 340 



HORTICULTURE. 



The present status of vegetable breeding, von Tschermak 341 



Fertilizer experiments with vnrious vegetables on low moor land, Alves 341 



Vegetable tests on sandy soil at the Umatilla Experiment Farm, Allen 341 



The vegetable garden in New Hampshire, Scherrer 341 



Vegetable growing 341 



Variations caused by grafting the tomato on the cabbage, Daniel 341 



The fruiting relations of various garden forms of Brassica oleracea, Roemer 342 



Things to be emphasized in present-daj^ horticulture, Hedrick 342 



Fruit gi'owing in Spain, Fernandez de la Rosa 342 



The sorting, sizing, packing, and storing of fruit, Markell 342 



The act relating to the standardization of fruit packing, Weldon 342 



Recent developments in sulphur sprays. Stewart 342 



Results of spraying experiments for 1915, Cumberland County, Watkins 342 



Intercroppmg the young orchard: From an economic standpoint, Burritt 342 



Report of the horticulturist, Tiuney 342 



The cherries of Japan, Wilson 343 



Peach-spraying experiments, 1915, near Centralia, 111., Watkins 34S 



The grape industry in California _ 343 



Report of the National Congress of Viticulture, at Pamplona, Spain, 1912 343 



