IV CONTEXTS. [Vol. 40 



Page. 



Variations in soon" tost? resulting from errors in sampling:. Stevens 145 



Seeil Reporter 146 



The revised agricultural seed law, Smith 146 



HORTICULTURE. 



A nutrition basis for horticultural practice. Kraus 147 



Effect of electricity on plants 147 



Effect <>f low temperatures on greenhouse plants, Free 1 17 



[Third report of nursery and market garden experimental station] 147 



Adaptation of vegetables, Tracy, sr 147 



Genetic studies of some characters in Pi sum. Nohara 147 



Regulating the bearing habit of fruit trees, Whitten 14S 



Influence of low temperature on fruit growing in New York, Chandler _ 1 18 



Repori en tests of self-sterility In plums, cherries, and apples, Sutton — 148 



Minnesota State Fruit-Breeding Farm In L918, Haralson 148 



Influence of soil management on frail hud development, Klrby 148 



Twenty years of fertilizers in an apple orchard, Anthony 149 



The effecl of cross-pollination on the apple, Wicks 149 



Status of commercial apple growing in Virginia, Marshall _, 149 



Peach growing, Could 149 



Storage of grapes, Thayer 149 



Smyrna fig culture, Rixford 149 



Culture of the Logan blackberry and related varieties. Darrow 150 



Cranberry Investigations, Headlee 150 



Temperatures of .-mall fruits when picked, Stevens and Wilcox 150 



Home storage houses Cor fruit, Fagan 150 



Home vegetable and fruit Btorage 150 



Repori Of mil tree investigations in Maryland. Johnston - 150 



A new variety of avocado, the "Chinin." [tie* 151 



Lemon orchard from buds of single selected tree. Shame! — 151 



Orai ge-llke frail from a lemon tree, Brown 151 



a fruiting orange thorn. Shame! and Pomeroy _ 151 



Pyrethram and Its culture. Faes— 151 



1 out BTBT. 



Value of scientific research In forestry, Korstlan 151 



Some present-day problems In forestry, Hodson 151 



Forestry work. Whellena I'd 



Effecl of the war on forests of France, Craves 152 



Report ol .lire. ior ui" fori Philippine islands for 1917, Fischer . 152 



Annual repori of the director of forests, Jolly 152 



The trees of White County, Indiana, Heimlich 152 



The vt etation of northern <'ape Breton [aland, Nova Scotia, Nichols ___ 1 



Replacement of Easl African fori ■■ by w led pasture land, Swynnerton 152 



Limiting factors In relation to tolerance of forest trees, Hutchinson .__ 152 



Logging in the Douglas fir region, Gibbons 152 



The ancient oaks of America, Trelease — — 158 



The raj system of Querctta oloo, Langdon .__ 158 



Relationship between leaves and latex of n< vea hnisMcnsi*, P.obilioff __ 153 



Rubber seed selection, afalet 158 



Girth-Increment of sal In the United Provinces, Blarsden 158 



Determination of increment by stem analysis 158 



The application of the graphic calculation, l. Parascandolo 158 



Meeting the wood fuel situation. at 158 



Suggestions for marketing small timber in Wisconsin. MacKaxe 1."»4 



Forest products statistics issued by the Statistical Clearing House — IBM 



nisi' vsks of rt w i B. 



Weather conditions and crop diseases in Texas, Blodgett 1.">t 



I riant diseases In Ontario] i:> ' 



Diseases of economic plants, Nowell— .. 



Parasitic fungi collected La Podolia, Russia, Garbowakl 



Mycological nothe,, Lindfors 155 





