n CONTENTS. [Vol.38 



Page. 



Tentative methods for sampling and analysis of commercial fats and oils 206 



Occurrence of manganese in insect flowers and stems, McDonnell and Roark .. 206 



Potato utilization possibilities, Gore 207 



Making potato silage for cattle food. Round and Gore 207 



The market for sunflowers 207 



Evaporated apples, McGillivray 207 



Canned foods, Bitting 208 



Home and farm canning, Cruess 208 



A German substitute for jute 208 



METEOROLOGY. 



Relation between temperature and crops, Seeley 208 



Killing frost and length of growing season in Kentucky, Walz 208 



Predicting minimum temperatm^es. Smith 209 



Some field experiments on evaporation from snow surfaces. Baker 209 



Mean annual rainfall of the United States, Ward 209 



Damage by hail in Kansas, Flora and Bush 209 



Monthly Weather Review _. 209 



Meteorological observations at Massachusetts Station, Ostrander and Millard. . 210 



SOILS — FERTILIZERS. 



Notes on direct determination of hygroscopic coefficient, Alway et al 210 



Some factors affecting nitrate-nitrogen accumulation, Gainey and Metzler. . . . 211 



Comparative study of nitrogen economy of certain Tennessee soils, Mooers. . . . 212 



Composition of soils of the Freehold area in New Jersey, Blair and McLean 214 



Soil survey of Washington County, Ala. , Hurst et al 214 



Soil survey of the Honey Lake area, Cal. , Guernsey et al 214 



Soil survey of the Pasadena area, Cal., Eckmann and Zinn 215 



Soil survey of Crisp County, Ga., Maxon and Long 215 



Soil survey of Benton County, Ind., Jones and Brill 215 



Soil survey of Scott County, Iowa, Stevens, Smies, and Espe 215 



Soil survey of Dawes County, Nebr., Bum et al 216 



Soil survey of Cortland County, N. Y., Maxon and Fuller 216 



Soil survey of Columbus Coimty, N. C.-, Hardison et al 216 



Soil survey of Hertford County, N. C, Vanatta and McDpwell 216 



Soil survey of Portage County, Wis., Geib et al 216 



Soil survey of Wood County, Wis., Geib et al 217 



Soil experiments on the Ozark upland, Miller and Duley 217 



[Fertilizer experiments], Brooks and Gaskill 218 



The lime and fertilizer needs of Indiana soils, Conner 219 



Redeeming an impoverished soil, Thome 219 



Fertilizer requirement of DeKalb soil 219 



Thirty-five years' results with fertilizers 220 



Progress of green manming in Mysore, Yegnanarayana Iyer 220 



[Relative value of oil cakes available in Mysore], Krishnayya et al 220 



Cyanamid as a source of nitrogen 220 



AvailabiUty of potash fertilizer residue in the soil 220 



Relative value of limestone of different degrees of fineness , . 220 



Effect of sulphur on different crops and soils, Shedd 221 



AGRICULTURAL BOTANY. 



The effect of one plant on another, Pickering 221 



Fungus fairy rings in Colorado and effect on vegetation, Shantz and Piemeisel. 222 



Growing aUen cacti in Michigan, Praeger 222 



Does the movement of air affect the ^owth of plants? Hollinger 223 



A method of controlling the rate of air movement, Blackman and Knight 223 



Stomatal aperture, leaf water content, and transpiration rate, Knight 223 



On the reduction of transpiration obserA^tions, Thomas and Ferguson 223 



Oxidation and reduction m vegetable tissues.— I, Mechanism of reaction, Wolff 223 



Oxidation and reduction in vegetable tissues.— II, Wolff and Rouchelman.. . 223 



On the mechanism of translocation in plant tissues. — An hj^othesis, Mangham 224 



Influence of hght and chlorophyll on magnesium nitrate, Harvey and True 224 



The toxicity of galactose and mannose for green plants, Knudson 224 



Dr. Seal's seed vitality experiments, Darhngton 224 



The nongermination of seeds of fleshy fruits, Massart 224 



