﻿CONTENTS. 



Depaetment Bulletin No. 1126. — The Effect of Borax on the 



Growth and Yield of Crops: Page. 



Introduction 1 



Review of the literature 2 



Scope and plan of the investigations in 1920 4 



Experiments with borax at Arlington, Va 5 



Effect of borax on Lima beans 6 



Effect of borax on snap beans 7 



Effect of borax on potatoes 9 



Effect of borax on corn 10 



Influence of rainfall on the effect of borax 11 



Periodic planting of corn and cotton 13 



Field experiments, using fertilizers with and without borax 17 



A comparison of two grades of Searles Lake potash in the field.. 17 



Further results with potatoes and corn 19 



Effect of borax on cotton at Muscle Shoals, Ala 22 



The residual effect of borax 25 



Symptoms of borax-affected plants 26 



Summary 27 



Literature cited 30 



Department Bulletin No. 1127. — Some New Varieties of Rice: 



Introduction 1 



Conditions under which the rice varieties described were grown 1 



Description of the rice plant 3 



Description of the varieties 5 



Fortuna . 1 5 



Acadia 6 



Delitus 7 



Tokalon 8 



Evangeline 9 



Vintula 10 



Salvo 11 



Honduras 11 



Wataribune 12 



Blue Rose 13 



Shinriki 14 



Comparison of varieties 15 



Department Bulletin No. 1128. — Decays and Discolorations in 

 Airplane Woods: 



Introduction 1 



General considerations 2 



Woods used for airplane construction 3 



General defects of airplane woods 5 



Color comparisons 14 



Discolorations caused by wounds 17 



Lightning wounds 17 



Sapsucker wounds 20 



Pith-ray flecks 20 



Chemical discolorations 23 



Discolorations caused by fungi 24 



Sap-stain 25 



Brown-oak discolorations 29 



Decay discolorations 30 



Decay in finished airplanes 40 



Summary 42 



Literature cited 45 



Defects of wood referred to in this bulletin, arranged by species 50 



3 



