668 



Journal of Agricultural Research 



Vol. XV 



Ambrosia— Page 



artemisiae folia, catalase and oxidase content 



of seeds 138 



trifida, catalase and oxidase content of seeds 138 

 Amids, acid, in normal and blighted spin- 

 ach 385-404 



Amino — 

 acids in nonnal and blighted spinach. . . . 3SS-404 

 nitrogen in — 



alfalfa silage 581-590 



hardened and nonhardened cabbage 97 



silage extract 125-132 



Ammonia — 

 effect of carbon disulphid and toluol on 



accumulation in soil 603-614 



in alfalfa silage 586-590 



in hardened and nonhardened cabbage. ... 97 

 Ammonia nitrogen in healthy and blighted 



spinach 398-404 



Ammonium — 

 carbonate, used in experiments with plow- 

 sole 508 



hydrate, used in experiments with plow- 

 sole 508 



Amygdalus persica, nature of dormancy of 



seeds 13S 



Andropogon halepensis sudanensis, catalase 



and oxidase content of seeds 137-174 



Angular-Leafspot of Cucumber: Dissemina- 

 tion, Overwintering, and Control (paper). 201-220 

 Angular-leafspot of cucumber — 

 dissemination by — 



drainage water 211 



insects 212-213 



pickers 211-212 



rain and wind 208-210 



effect of — 



desiccation 203-204 



germicides 205 



fruit infection 208 



host plants 205-206 



stomatal infection 206-208 



thermal death point 204-205 



overwintering in — 



insects 214 



seeds 214 



soil 213 



remedial measures — 



resistant varieties 217 



sanitation 217 



seed treatment 218 



spraying 217-218 



Ant. See Pheidole megacephala. 

 Armsby, Henry Prentiss, and Fries, J. Au- 

 gust (paper): Net Energy Values of Alfalfa 



Hay and of Starch 269-286 



Amy, A. C, and Hayes, H. K. (paper): Ex- 

 periments in Field Technic in Plot Tests . 251-262 

 Artschwager, Ernst F. (paper): Histological 



Studies on Potato Leaf roll 559-570 



Ash- 

 digestibility in alfalfa hay and starch 271, 282 



in normal and blighted spinach 371-375 



in dry matter of feeding stuffs 270 



Asparagin, used in determining water-solu- 

 ble nitrogen in spinach 397-404 



A spcrgillus — Page 



niger, fttngus isolated from Ipomoea batatas . 364 



sp., not cause of dam ping-off in conifers 549 



Ailantia — 



cirtrioides, susceptibility to Pseudomonas 



cilri 662-665 



dislicha, susceptibility to Pseudomonas 



citri 662-665 



Aucuba japonica, production of injected areas 



due to freezing 86 



Austrian pine. See Pinus austriaca. 

 Avena saliva — 



reported bridging host for transfer cf timo- 

 thy rust 222 



used in bridging-host experiments 226-249 



Azotobacter, effect of carbon disulphid and 



toluol on 601-614 



Bacteria, nitrogen-fixing, effect of carbon 



disulphid and toluol 601-614 



Bacteriological Studies on Alfalfa Silage 



(paper) 571-592 



Bacterium, lachrymans, causal organism of 



angular-leafspot of cucumber 201-220 



Bactrocera cucurbitae — 



host of Opiusflctcheri 456-457 



host of Tetrastichus giffardianus 454-458 



Balsam-apple. See Momordica balsamina. 

 Balsamocitrus gabonensis, immunity to Pseu- 

 domonas citri 662-665 



Balsam-pear. See Momordica charantia. 

 Barberry. See Berbens spp. 

 Barium — 

 chlorid, used in determining nitrogen in 



spinach 400-404 



hydroxid, used in determining nitrogen in 



spinach 399-404 



phosphotungstate, used in determining 



nitrogen in spinach 399-404 



Barley. See Hordeum spp. 

 Basic nitrogen in healthy and blighted spin- 

 ach 399-404 



Basswood. See Tilia americana. 

 Beach, B. A, and Halpin, J. G. (paper): Ob- 

 servations on an Outbreak of Favus 415-418 



Beef cattle, crosses with dairy breeds 1-57 



Beetle, June green. See Coiinus nitida. 

 Begonia, production of injected areas due to 



freezing 86 



Berberis spp., reported bridging host for 



Puccina poculiformis 22 J 



Bermuda grass. See Capriola dactylon. 

 Bestill. See Thevetia neriifolia. 



Beta vulgaris, effect of farm manure on 494-503 



Biologic forms of Puccinia graminis, plasticity 



of 221-249 



Biology of fruit-fly parasites in Hawaii 419-466 



Black, Otis F., et al. (paper): Physiological 



Studies of Normal and Blighted Spinach . 369-408 

 Blackrot — 



Java, of Ipomoea batatas 347-349 



of Ipomoea batatas — 



description 344-346 



susceptible varieties 346 



Blacktop, type of damping-off 525-538 



Black-walnut worm. See Daianaintegerrim^. 

 Bluegrass. See Poa pratensis. 



