﻿INDEX. 



15 



Wheat — Continued. 



Spring — . - 



utilization of soil water, bulletin by O. R. Mathews Uulletin No. Page. 



and E. C. Chilcott 1139 1-28 



yield and water utilization on Great Plains 1139 9-13 



Wisconsin — 



milk, production, cost on farms, bulletin by S. W. 



Mendum 1144 1-23 



road-building rock, tests, results 1132 44, 51, 52 



Wood- 

 compression failures 1128 11 



durability, factors affecting 1128 31 



kiln-drying, handbook, bulletin by Rolf Thelen 1136 . 1-64 



moisture, forms, nature and determination methods 1136 1-3 



shrinkage in kiln drying, and defects caused by 1136 23-26 



specific gravity , relation to strength 1128 6-9 



steaming and bending, precautions 1128 9-10 



summer growth and spring growth, relation to strength- 1128 6-9 

 Woods — 



airplane — 



decays and discolorations, bulletin by J. S. Boyce. 1128 1-52 



defects and color changes 1128 5-17 



discolorations caused by fungi 1128 24-40 



discolorations, causes and importance in airplane 



timbers 1128 14-40 



varieties used in airplane construction 1128 3-5 



worm-holes in, insects causing 1128 12-13 



Wright, R. C, and George F. Taylor, bulletin on 

 "Freezing temperatures of some fruits, vegetables and 



cut flowers" 1133 1-8 



Yarns — 



breaking strength from cotton of different densities.. 



cotton, breaking strength and irregularity 



Yews, injury by frost, studies 



Zinc arsenite, composition, study 



Zythia rosinae, source of discoloration of wood 



f 7-8, 10-11, 

 1135{ 13-15, 



[ 17-18 

 1148 4-5, 6 



1131 8 



1147 

 1128 



10 

 29 



o 



