n CONTENTS. [Vol 38 



Page. 



Beechnut oil, an indiKonous edible oil to manufacture in time of war, Truelle. . 806 



Influence of time of harvest, drying, and freezin-j of spearmint on oil, Rabak. . 807 



A preliminary study of the Philippine coconut oil industry, Villyar 807 



The manufacture of nut margarin, Pickard 807 



The utilization of v/aste tomato seeds and skins, Rabak 807 



The utilization of waste toniato seeds and skins, Rabak 808 



Effect of incomplete distillation on distillation of birch, Palmer 808 



Influence of moisture on distillation of hardwood, Palmer and Cloukey 808 



Effect of catalyzers on destructive distillation of hardwoods, Palmer 808 



Effect of varying cooking conditions on sulphite pulp from spruce, Lunak 809 



Pulping extracted yellow-pine chips by sulphate process, Kress and Textor. . . 809 



Sulphite turpentine, Schorger 810 



Van Nostrand's chemical annual, edited by Olsen 810 



Charles Anthony Goessraann 810 



METEOROLOGY. 



Suggestions in regard to extending the area of spring-wheat culture 810 



Nitrites from nitrates by sunlight, Moore 811 



Monthly Weather Review ._ 811 



Meteorological observations at Massachusetts Station, Ostrander and Chandler. 812 



SOILS — FERTILIZERS. 



Soil survey of Hempstead County, Ark. , Taylor and Cobb 812 



Soil survey of Fillmore County, Nebr. , Meyer et al 812 



Water extractions of soils as criteria of their crop-producing power, Burd 812 



Effect of season and crop growth in modifjdng the soil extract, Stewart 813 



Freezing-point metliod as index of variations in soil solution, Hoagland 813 



Humus in mulched basins and effect of mulches on orange production, Jensen. 814 



Relation of weed growth to nitric nitrogen accuuuilation. Call and Sewell 814 



Alkali soils: Some biochemical factors in reclamation, Barnes and Barkat Ali. . 815 



Observations on occurrence of infertility under trees, Jatindra Nath Sen 816 



Results of fertilizer experiments conducted at the Pee Dee Station, Keitt 816 



A simple way to increase crop yields. Miller 816 



Our mineral supplies. — Nitrates, Gale — 817 



Sul^jhate of ammonia: Its source, production, and use 817 



Experiments on availability of treated phosphates, Lipman and McLean 817 



Sixteen per cent acid phosphate, Bachtell 817 



Explorations and studies of beds of phosphorites in Russia, 1914, Samoilov 817 



Influence of carbonates of magnesium and calcium on Wisconsin soils, Fulmer.. 818 



Nitrification as a measure of availability of calcium carbonate. Burgess 819 



The principles of the liming of soils, Shorey 819 



The use of lead for stimulating growth in plants, Stutzer 819 



Commercial stocks of fertilizer and fertilizer materials 820 



Peat in 1916, Turp 820 



AGRICULTURAL BOTANT. 



Significance of colloidal chemistry in physiology, Crocker 820 



Osmotic pressure in animals and plants, Atkins 821 



Carbon assimilation, Jorgensen and Stiles 821 



Buffer processes in the metabolism of succulent plants, Hempel 321 



A study of stomata, Relif ous -_ 821 



The nature of tendrils and the formation of branch nodes, Oinoue 822 



Slow changes in buried grapevines, Panteanelli 822 



A method of prophesying the life duration of seeds, GroA^es 822 



Electromotive phenomena in plants. Waller et al 822 



Experimental studies in the physiology of heredity, Blackman et al 822 



Studies of inheritance in Pisum, II, Wliite 822 



Biocharacters as separable units of organic structure, Osborn 823 



Studies on self-sterility. — I, Behavior of self -sterile plants, East and Park 823 



Ecology and physiology of the red mangrove, Bowman 823 



A cyanogenic Mucor, Guyot ._._. _. .._ 824 



Comparison of Rocky Mountain grasslands with prairie of Illinois, Fuller 824 



The vegetation of southeastern Washington and adjacent Idaho, Weaver 824 



The vegetation of Paraguay, Chodat and Vischer 824 



