AGRICULTURAL INDEX 



1223 



Y 



Yacca gum 

 Pioduction of yacca in South Australia. H. 

 P. Starrett. Chem & Metallurgical Eng 

 (lOth av ac 3Gth st. X.Y. 25c) 23:1154 D 

 15 "20 

 Yacht racing 

 Contest for the America's cup. C. S. Hoyt. 



11 Country Life 38:34-41 Jl '20 



Route to the cup races, map Country Life 



38:106 Jl '20 

 Sailing the summer seas. G: E. Roosevelt. 



il Country Life 38:59-61 Jl '20 



Yacons 



Yacon. H. E. Durham, il Gard Chron (Lond) 

 69:81 F 12 '21 

 Yale forest school 



Yale forest .school. Science (Science Press. 

 Garrison. N.Y. 15c> n s 52:602-3 D 24 '20 

 Yale forest school reunion. Am For 27:106- 

 7 F '21 

 Yam weevils. See Sweet potato weevils 



Yams 



E.xpeiiments in Trinidad on yam cultivation 



191S-19. Jamaica Ag Soc J 24:85-S Mr '20 

 Experiments in yam cultivation in Trinidad. 



Ag News 19:27 Ja 24 '20 

 Louisiana vams: how to cook them. M. Hull. 



comp. il La Ag Ext C 41:1-7 '20 

 St Vincent yam versus Barbados or St Lucia. 



W. A. Swaby. Jamaica Ag Soc J 25:161-3 Ap 



■21 

 St Vincent vams. C. C. Hastings. Jamaica 



Ag Soc J 24:170-1 Je '20 

 White vams: svmposium. Jamaica Ag Soc J 



24:310-12 S '20 

 Y'am culture. F. G. Galang. il Philippine 



Ag R 13,no 1:63-72 '20 

 Yam culture in Porto Rico. C. F. Kinman. il 



Porto Rico Exp B 27:1-22 '21; Conclusions. 



Ag News 20:245 Ag 6 '21 

 Yam trade to-day and yesterday. R. C. 



Somerville. Jamaica Ag Soc J 24:39-40 F '20 

 Yams — the sweet spuds of the South. J. B. 



Iden. il Country Gent 85:10-11+ Mr 6 '20 

 Yaqui; story. Z. Grey, il Country Gent 85: 



3-4+ S 25; 12-13+ O 2 '20 

 Yarrow 

 Receptacle of achillea millefolium L. M. L. 



Merriman. il Torreya 21:21-4 Mr '21 

 Yearbook of agricultural legislation, Inter- 

 national. See International yearbook of 



agricultural legislation 

 Yearly occurrence; story. M. Muffett. il Ag 



J of British Columbia 5:236 O '20 

 Yeast 

 Compressed yeast as a sugar by-product. H: 



Arnstein. Sugar 23:72 F '21 

 Extraction and concentration of the water- 

 soluble vitamin from brewers' yeast. 



T. B. Osborne and A. J. Wakeman (J. Biol. 



Chem., 40,no 2:383-94 '19). Exp Sta Record 



42:314-15 Mr '20 

 Fresh* information concerning yeast. Sci Am 



Monthlv (233 Broadway, N.Y. 60c) 1:417- 



20 My '20 

 Home made yeast. Cal Cultivator 56:213 F 



12 '21 



Homemade yeast. Rural N Y 79:1329 Ag 14 '20 



New mannose ferment: research in Italy. G. 

 Mezzadroli. Int R Sci & Prac Ag lO.no 7: 

 992-3 Jl '19 



Notes on veast and mould counts of cream- 

 ery butter, 1919. T. H. Lund. (In Rep., 

 Dairymen's assns., 1919, p. 90-4) '20 On- 

 tario Ag Dept 



Pink yeast causing spoilage in ovsters. A. C. 

 Hunter. U S Ag B 819:1-24 '20 



Study of lactose- fermenting yeasts in 

 yeasty cream. B. W. Hammer and W. A. 

 Cordes. bibliog la Ag Exp Research B 61: 

 1-24 '20; Excerpts. Cl-eamery 10:44-6 Je '21 



Vitamin requirement of yeast. R. J. Williams 

 (J. Biol. Chem.. 3S.no. 3:465-86 '19). Exp 

 Sta Record 41:670-1 N '19 



Yeast as a food. Literary Digest (354 4th av, 

 N.Y. 10c) 65:100-4 Je 5 '20 



Yeast as a food, a medicine, and a laboratory 



reagent. J Home Econ 12:134-5 Mr '20 

 Yeasts and mold in butter. T. H. Lund, il 

 N Y Prod R 49:1184-5 Ap 14 '20; Excerpts. 

 Ag Gaz of Canada 7:492-4 Je '20 

 Yeasts and molds. T. H. Lund. N Y Prod R 

 .Tl:510 Ja 12 '21; Excerpts. Creamery 10:30 

 Ja '21; Farmer's Advocate 56:278 F 24 '21 

 Yeasts and moulds in butter and cream. 

 T. H. Lund. N Y Prod R 48:282+ Je 11 '19 

 Yeast as culture medium 



ENliacts of pure dry yeast for culture media. 

 .S. H. Avers and P. Rupp. bibliog J Bact 5'. 

 S9-9S Ja '20 

 Yeast autolysate as a culture medium for 

 bacteria. I. J. Kligler. J Bact 4:183-8 Mr '19 

 Yellow birch. See Birch 

 Yellow body. See Corpus luteum 

 Yellow fever 



On the trail of the yellow-fever germ, il R 

 of Reviews (30 Irving place, N.Y. 35c) 61: 

 386-92 Ap '20 

 Way to win South America; how Guayaquil 

 was rid of yellow fever. Literary Digest 

 (354 4th 'iv, N.Y. 10c) 64:30 Mr 27 '20 

 Yellow foxtail. See Pearl millet 

 Yellow jackets. See Wasps 

 Yellow jasmine. See Jasmines 

 Yellow pine. Western. See Pine 

 Yellow rattle 

 Eradication of yellow rattle. J Bd Ag 26:837-8 

 N '19 

 Yellow rocket. See Winter cress 

 Yellow stripe disease. See Sugar-cane mosaic 

 Yellow-throats (birds) 

 Nest study of the Maryland yellow-throat. 

 N. E. Shaver. (Studies in natural history, 

 V. 8,no. 2) 12p il '18 Univ. of la., Iowa City 

 Yellowstone national park 

 Fossil forests of the Yellowstone national 

 park. F. H. Knowlton. 29p il map '21 U.S. 

 Nat. park service, Washington, D.C. 

 Land of the whopper. E. Frazer. il Sat Eve 

 Post (Independence sq, Philadelphia 5c) 

 192:40-57 My 1 '20 

 Last wilderness. E. Frazer. il Sat Eve Post 

 (Independence sq, Philadelphia 5c) 192:14- 

 15+ Ja 24 '20 

 Manual for railroad tourists; season of 1920. 

 Sp map '20 U.S. Nat. park service, Wash- 

 ington, D.C. 

 Resolution adopted by the Lincoln county 

 wool growers' association. Nat Wool Grower 

 9:42 My '19 

 Rules and regulations; Yellowstone national 

 park, 1920: season June 20 to Sept. 15. 103p 

 bibliog il maps '20 U.S. Nat. park service, 

 Washington, D.C. 

 Yerba mate. See Matg 

 Yesterlald egg farms company 

 Cooperative plan of community poultry and 

 egg farming. H. H. Shepard. il Reliable P J 

 27:32+ Mr '20 



Yew 



Le grand if de Chillon. H. Badoux. il J For 



Suisse 72:61-3 Ap '21; Discussion. 72:179- 



80 S '21 

 On certain archaic features in the seed of 



taxus baccata, with remarks on the antiq- 



uitv of the taxineae. B. Sahni. bibliog il 



Ann Bot 34:117-33 Ja '20 

 Ovuliferous structures of taxus canadensis. 



A. W. Dupler. bibliog il Bot Gaz 69:492- 



520 Je '20 

 Poisoning of live stock by yew. J Ministry 



Ag 27:810-11 D '20 

 Raising yews from seed at Wellesley. T. D 



Hatfield, il Gard M 33:23-6 Mr '21 

 Romance of our trees; the yew. E. H. Wilson. 



il Gard M 30:213-17 Ja '20 

 Staminate strobilus of taxus canadensis. 



A. W. Dupler. bibliog il Bot Gaz 68:345-66 



N '19 



Yogurt 



Lecheria el yoghurt. A. de Toth. R de Ag 

 Cuba 4:556-7 Ap '21 



