810 



AGRICULTURAL INDEX 



Osmotic pressure — Continued 

 Siig-gestions with respect to the measurement 

 of osmotic pressure. L. Knudson and S. 

 Ginsburg. bibHog il Am J Bot 8:164-70 Mr 

 '21 



Osmunda 

 Mitosis in osmunda. L. W. Sharp. Bot Gaz 69: 



ss-;a ja '20 



On the archesporial and meiotic mitoses of 

 osmunda. L. Digrby. bibliog- 11 Ann Bot 33: 

 13.5-72 Ap '19 

 Osmundaceae 



Missing link in osmimdites. M. C. Stopes. 

 bibliog il Ann Bot 35:55-61 Ja '21 

 Osoberry 



Trees and shrubs; nuttallia cerasiformis- 

 the oso berry, il Gard Chron (Lond) 67: 

 253 My 22 '20 

 Ospreys 



My osprey. H. F. Sanders, il Country Life 

 38:104+ Je '20 

 Osteomalacia 



Malformation in young cattle, il Ag Gaz of 

 New South Wales 30:788-90 N '19 



Osteoporosis or osteomalacia of equidae in 

 the Belgian Congo. R. Van Sageghen. Int 

 R Sci & Prac Ag lO.no 10:1162-3 O '19 

 Ostrich pLume ceiosia. See Cockscomb, Feath- 

 ered 

 Ostriches 



Abris pour autruches. il J Ag Pratique 33: 

 302-3 Ap 22 '20 



Inheritance of callosities in the ostrich. J. 

 E. Duerden. il Am Nat 54:289-312 Jl '20 



Mr Ostrich is strutting with his plumes again. 

 H. G. Pratt, il II World (Drexel av and 

 58th St. Chicago 25c) 32:929-32 F '20 



Ostrich learing :n Sardinia. R. Ottolini. Int 

 R Sci & Prac Ag 11, no 6:772-4 Je '20 



Ostriches in North Africa. C. Rivifere. Int R 

 Sci & Prac Ag 11, no 4:492-3 Ap '20 



Parallel mutations in the ostrich. J. E. 

 Duerden. Science (Science Press, Garrison, 

 N.Y. 15c) n s 52:165-8 Ag 20 '20 

 Other side of the brand; story. C. E. Freeman. 



il Country Gent 86:18+ JI 16 '21 

 Otiorhynchus ovatus. See Strawberry root wee- 

 vils 



Ottawa v/inter fair 

 Banner year for the Ottawa winter fair, il 



Farmer's Advocate 56:120-3 Ja 27 '21 

 1920 Ottawa winter fair. Farmer's Advocate 



55:124-7 .Ja 22 '20 

 Ottawa winter fair. J Ag (Quebec) 22:133 F 



Otters 

 Every step in trapping. C. O. Ormsbee. il 



Country Gent 85:5S .Ta 17 '20 

 Otter playboy of nature. A. Rutledge. Coun- 

 try Life 38:106 O '20 

 Ourisias 

 Alpine garden; ourisia coccinea. E. H. Jenk- 

 ms. Gard Chron (Lond) 67:66 F 7 '20 

 Out-apiaries. See Bee culture— Out-apiaries 

 Ovaries 

 Influence of the endocrine glands upon the 

 anmial body.' T\". E. Stone. Am Vet M 

 Assn J 56:278-82 D '19 

 Over her left shoulder: storv. M. Crosby Cal 



Cultivator 56:112, 144 Ja 22-29 '21 " 

 Owl-Interest Jersey cattle club 

 2d annual meeting, Spencer, Mass., Aug. 14 

 Jersey B 39:2304 S 1 '20 

 Owls 

 Huntsmen of the sky. H. T. Middleton. il 



Country Gent 86:20 Ap 16 '21 

 Sere^chv the owl. M'. A. Bartlett. Countrv 



Life 37:96 Mr '20 

 ^°,2^®x^^°'""^°" Indian birds; spotted owlet. 

 ^f P-^-'^^%\^\l^^ ^"<* C. M. Inglis. il Ag J 

 of India 15:235-8 My '20 

 Various parasitic plants; with an owl story 

 R. W. Shufeldt. il Am For 25:937-41 Mr '19 

 Ownership. See Property 

 Ox warbles. See Warble flies 

 Oxen 

 Moroccan draught oxen. A. Lerov. Int R Sci & 

 Prac Ag 10.no 2:201 F '19 



Some surgical operations on the ox. H. E. 



Bemis. Am Vet M Assn J 60:51-8 O '21 

 Value of a good ox team. G: Eaton, jr. 



Rural N Y 79:1792 N 27 '20 



Feeding 



Experiments on the feeding of draught oxen, 

 in the Philippines. F. P. Lago. Int R Sci 

 & Prac Ag ll,no 6:767-9 Je '20 



Feed for oxen. T. Butler. Prog F 35:491 Mr 6 

 '20 



Hitching and haulage 

 Attelage des boeufs. M. Ringelmann. il J Ag 



Pratique 33:106-7 F 5 '20 

 Hitching up oxen, il Nor'-West F 40:891 S 



5 '21 



Oxford Downs (sheep) 



Breeds of livestock — sheep Oxford Downs: 



description and characteristics, il Prog F 



35:1852 N 20 '20 

 Down breeds of sheep; the Oxford Down. 



H: G. Robinson. Live Stock J 91:317 Mr 26 



'20 

 For what shall we breed Oxfords? A. G. 



Buckelew. Am Sheep B & W 40:42 Ja '20 

 History of the Oxford Down, il Am Sheep B 



6 W 39:394-6 Jl '19 



Oxford Downs; their story. Live Stock J 93: 

 301 Mr 25 '21 



Rise of a great breed of sheep. T. C. Stone. 

 Am Sheep B & W 39:734-5 D '19 

 Oxfordshire Downs (sheep). See Oxford 



Downs (sheep) 

 Oxidases 



Efr'ect of salts upon oxidase activity of apple 

 bark. D. H. Rose and others, bibliog Bot 

 Gaz 69:218-36 Mr '20 



Oxidase reaction in healthy and in blighted 

 spinach. H. H. Bunzell. J Ag Research 15: 

 377-80 N 18 '18 



Relation of catalase, oxidase, and H con- 

 centration to the formation of over- 

 growths. R. B. Harvey, bibliog il Am J 

 Bot 7:211-21 My '20 

 Oxidation 



Isolation and description of a bacterium caus- 

 ing oxidation of arsenite to arsenate in 

 cattle dipping baths. H: H. Green. (In Rep., 

 1918, p. 595-610) 10s '19 Union of South 

 Africa, Dir. of veterinary research, Cape 

 Town 



Oxidation of vanillin to vanillic acid by cer- 

 tain soil bacteria. W: J. Robbins and E. 

 C. Tathrop. bibliog Soil Sci 7:475-85 Je '19 



Oxidizing power of soil from limed and un- 

 limed plots and its relation to other fac- 

 tors. J. R. Neller. bibliog il Soil Sci 10:29- 

 39 Jl '20 



Reduction potentials of bacterial cultures 

 and of water-logged soils. L: J. Gillespie. 

 bibliog Soil Sci 9:199-216 Ap '20 



Volumetric determination of sulfates by oxi- 

 dation of benzidine sulfate with KMn04. 

 P. L. Hibbard. Soil Sci 8:61-5 Jl '19 

 Oxygen tanks 



Economical tank for air treatment of partu- 

 rient paresis. I. D. Wilson. Am Vet M Assn 

 J 54:749-50 Mr '19 



Oyster-shell scale 



Fisrht ovster shell scale. C: L. Fluke, jr. il 



Wis Ag Ext C 134 4p '20; Same. Hoard's 



D 59:1002 My 7 '20 

 Forms of the ovster-shell scale in Illinois.. P. 



A. Glenn. J Econ Entom 13:173-7 Ap '20 

 Ovster-shell scale, il B C Ag Dept C 41:1-3 



'18 

 Oyster-shell scale. L. Caessar. il Can Hort 43: 



95 Ap '20 

 Oyster shells 



Homemade burned oyster shell lime. R. W. 



De Baun. Rural N Y 80:221 F 12 "21 

 Oyster shell composition for paper. F. J. 



Baumgardner. Paper (471 4th av, N.T. 25c) 



26:14-15 Ap 14 '20 

 Oysters 



Aids to successful oyster culture. T. C. Nel- 

 son, bibliog il map N J Ag Exp B 351:1-59 



'21 

 Methods of handling Apalachicola oysters. 



A. M. Henry. Fla Ag Dept Quar B v 29:162- 



8 Ap '19 



