I'JliO] CONTENTS. Ill 



Page. 



Tlio wator economy of niafitinio plains, Hill li'J.'J 



Vef^etatioii (if iiiidraiiKMl depressions on flie Sacramento plains, Uamaley_ li'Jl 



Colloidal properties of hojr water, Kiir^; and Thompson 1JL*4 



Physiolo;;ical pre-determinailou. — II. Review of literature, Kiddand West, 224 



Relation of nutrient solution to cell sap of barley, Hoa^laud 224 



Seiuiperineable inenibfanes in plants, Kippel 22"! 



Intluence of ct-rtain ductless j;land substances on i)laut tissues, BudinKton_ 225 



loniziiition of air by plants, I'rsprun}; and Gockel 225 



Chemical constituents of Aiiiunn(thii.s rvtroflcrus. Woo 225 



Storied or tier-like structure of certain dicotyledonous woods, Record 225 



Mucilafie or slinie formation in the cacti, Stewart 226 



Origin an<l development of the pycnidium, Kempton 226 



The formation of fruiting bodies by Poucilliinn (jkiucum, Bezssonof 226 



The resistance of i)lants to cold, II, rantanelli 226 



Alterations at temperatures near freezing, Pantanelli 226 



Development of conceptions of photosynthesis since Ingen-Housz, Spoer_ 227 



A plate method for isolating anaerobes, Dick 227 



Moditications in Dick's plate method for isolating anaerobes, Northrup 227 



International catalogue of .scientitic literature. j\I — Botany 227 



International catalogue. II — Bacteriology, QR — Serum physiology 227 



FIELD CKOPS. 



Soil and climatic factors on the Pahuise silt loam of Idaho, I'eterson 227 



[Report of the] department of agronomy, Knight 228 



Report of experiments. Substation No. 4. Bearniont, Tex., Laude 220 



The duty of water in Cache Valley. Utah, Harris 230 



[The elfect of rotations on yield and protit from bog soils J, Gran.s'trom 231 



Local Held experiments on different crops, Bolin 231 



Results of cooperative experiments, Aronssou 231 



Barley fertilizer experiments. Lemmermann 232 



Broom-corn experiments at Woodward, Okla., Rothgeb and Sieglinger 232 



Carpet grass. Piper and Carrier 233 



Time of applying nitrate of soda to cotton, Cautlien and Williamson 233 



The jack bean, Piper 233 



[Experimental results and experiences in potato culture], Christie 234 



Winter rape, Fruwirth . 234 



Soy beans in Indiana, Wiancko and Cromer 234 



Soy beans in Iowa, Hughes and Wilkins 235 



Sudan grass in Iowa, Hughes and Wilkins 235 



The intluence of length of wheat heads on resulting crops, Hume et al 235 



HORTICULTURE. 



Plant breeding from horticultural standpoint, Crow 235 



Pruning and economj- of water, Whitten 235 



Action of lime in lime-sulpbiw and lead ar.seuate spray, Robinson 235 



Gardens, their form and design. Viscountess Wolseley 23(» 



The garden month by month. Thomas 236 



Preparation and care of garden for vegetables, compiled by Brumley et al_ 236 



[Brussels sprouts and carrots at Wisley in 1918 J 236 



United States grades for northern-grown <mions, Truax 236 



Frost and the prevention of damage by it 237 



[Report of the division of nursery inspection], O'Kane 237 



New deciduous fruit station, Howard 237 



Rejiort on the experimental orchard at IMitchell for 1919, Ilobbs et al 237 



Pollination of deciduous fruits, Tufts 237 



[Refwrt on fruit production in Australia] 237 



Effect of grass on ai)ple trees, Rawes jind Chittenden 237 



The treatment of apple trees girdled by mice, Stoddard 237 



Profitable apples for market 23>n 



Factors influencing keeping qualities of apples and jtears, Overholser 238 



Results obtained in selecting and Hroi)agating Paradise stock, Hatton 238 



Experimental dusting and spraying of peache.s for 1919, Chase 238 



The principal parasites of the peach. Chase 238 



Pig cuttings and their proper preparation and treatment, Condit 238 



1 



