888 



AGRICULTURAL INDEX 



Species — Continued 



* Relative age of endemic species. H. de Vries. 

 Science (Science Press, Gari'ison, N.Y. 15c) 

 ns 47:629-30 Je 28 "18 

 Relative age of endemic species and other 

 controversial points. J. C. Willis, bibliog 

 Ann Bot 31:189-208 Ap '17 

 Sources and distribution of the New Zealand 

 flora, with a reply to criticism. J. C. Willis, 

 bibliog Ann Bot 32:339-67 Jl '18 



See also Bleeding; Evolution; Hybridiza- 

 tion; Natural selection; Plant breeding; 

 Variation (biology) 

 Specimens, Preservation of. See Plants — Collec- 

 tion and preservation 

 Speculation 



Business problems of the month. Coop Man- 

 ager & F 7:46 S '17 

 Future trading in wheat. L. D. H. Weld, il 



Country Gent 82:1701 N 3 '17 

 In a pig's eye. C. B. Gapen. il Country Gent 



83:17 Ja 5 '18 

 Iowa tries to shut out private wires. Am Coop 



J 12:581 Ap '17 

 Protecting grain hedge; speculation insures 

 against pi'ice flurries. J. H. Collins. Coun- 

 try Gent 81:1835 O 14 '16 

 Trading in grain futures. L. D. H. Weld. (In 

 Pan American scientific congress Pro., 1915, 

 V. 3, p. 430-9) '17 



See ulso Investments; Securities; Stocks 

 Spelling 



Natural way to start reading and spelling. 

 E. P. Lynch. Country Gent 81:769 Ap 1 '16 

 Spelt 



Hybridisation tests between spelt and wheat 

 in Holland. H. M. Gmelin. Int R Sci & Prac 

 Ag 8, no 9:1236-9 S '17 

 See also Emmer 

 Spermatogenesis in animals 



Mules that breed. O. Lloyd-Jones, bibliog il 

 J Heredity 7:494-502 N '16 

 Spermatogenesis in plants 



Pollen tube and spermatogenesis in iris. M. 



L. Sawyer, il Bot Gaz 64:159-64 Ag '17 

 Spermatogenesis of polytrichum juniperinum. 

 C: E. Allen, bibliog il Ann Bot 31:268-91 Ap 

 •17 

 Spermatozoa 



On the life duration of the horse spermato- 

 zoon outside of the body. S. Sato. (Acta 

 Scholae Med. Univ. Imp. Kioto, 1, no. 3 361- 

 74p '16). Exp Sta Record 38:170 F '18 

 Sphaeralcea. See Globe mallow 

 Sphaeronema 

 Conidlal formation in sphaeronema fimbriatum. 

 S. G. -Lehman, il Mycol 10:155-63 My '18 

 Sphaeropsis malorum. See Apple canker 

 Sphagnum moss 



* Are you collecting sphagnum; a sort of moss 



of great value for surgical dressings. G: E. 



Nichols, il Sci Am Sup (233 Broadway, N.Y. 



10c) 86:308-10 N 16 '18 



Growth of trees in sphagnum. G: B. Rigg. Bot 



Gaz 65:359-62 Ap '18 

 Lysichiton camtschatcense (L.) Schott, and 

 its behavior in sphagnum bogs. G. "Tures- 

 son. bibliog il Am J Bot 3:189-209 Ap '16 

 Sphagna, their habitats, adaptations, and as- 

 sociates. W. Watson. Ann Bot 32:535-51 O 

 •18 

 Sphenophorus callosus. See Corn bill bugs 

 Sphinx, Catalpa. See Catalpa sphinx 

 Spice bush 



Diseases and pests 

 Gloeosporium disease of the spice bush. J. J. 

 Taubenhaus. Am J Bot 1:340-2 Jl '14 

 Spices 



Report on spices. H. E. Sindall. Assn Ofiic 

 Ag Chem J 2:197-201 F '17 



Analysis 



Preliminary report on determination of ash, 

 especially in spices. C. S. Brinton. Assn 

 OfRc Ag Chem J 2:201-8 F '17 



Spices and other condiments. Assn Offic Ag 

 Chem J 2,no 3,pt 2:317-26 N '16 



Spider webs 

 Weaving of a spider's web. F. Cuttriss. il 



Country Life 31:33-5 N '16 

 When spiders fly. A. L. B. King. Country Life 



33:84 N '17 

 Spiders 



Spiders. Wallaces' F 41:77 Ja 21 '16 



Spiders. A. B., Comstock. il Cornell Rural 



School Leaflet v 11, no 1:131-7 '17 

 Transcanadian spiders. J. H. Emerton. (In 



Repoi't, Entom. Soc. of Ontario, 1917, p. 76-S) 



map '18 Ontario ag. dept., Toronto 

 Spike-horned leaf-miners 



Spike-horned leaf-miner [cerodonta dorsalis 



Loew] an enemy of grains and grasses. P. 



Luglnbill and T. D. Urbahns. map U S Ag 



B 432:1-20 '16 

 Spinach 



Experiences with spinach; svmposium. Mar- 

 ket Growers J 23:78-f Ag 15 '18 

 Extra early spinach. Fruit-Grower 27:459 O 



15 '16 

 Growing spinach for northern markets. C. L. 



Bartles. Market Growers J 18:120 F 15 '16 

 Spinach as market-garden crop. Mass Ag Bd 



B 5:152-3 '18 (3d ed. rev.) 

 Spinach crop. J. T. Rosa, jr. 11 Country Gent 



82:463 Mr 3 '17 

 Spinach; experiences in growing. Market 



Growers J 19:48-9 Jl 15 '16 

 Spinach for fall and winter use. R. W. De 



Baun. Rural N Y 75:1026, 1047 Jl 29- Ag 5 



'16 

 Spinach in a number of ways. M. H. Neil, il 



Country Gent 82:1132 Jl 7 '17 

 Spinach production in California. Market 



Growers J 22:400 Je 1 '18 



See also New Zealand spinach 

 Diseases and pests 

 True nature of spinach-blight and relation of 



insects to its transmission. J. A. McClintock 



and L. B. Smith, il J Ag Research 14:1-60 



Jl r '18 



Seed 



Spinach seed in Europe. Am Flor 49:1240 D 22 

 '17 

 Spinach carrion beetles 



Spinach carrion beetle. R. A. Cooley. il J 

 Econ Entom 10:94-102 F '17 

 Spindle trees. See Evonymus 



Spindling-sprout disease. See Potatoes — Dis- 

 eases and pests 

 Spinose ear tick 



Contribution to the life-history and habits of 

 the spinose ear tick, ornithodoros megnini. 

 W: B. Herms. J Econ Entom 10:407-11 Ag 

 '17 

 Spinose ear tick and methods of treating in- 

 fested animals. M. Imes. 11 Farmers' B 980: 

 1-8 '18 

 Spiny elm caterpillars 



Insect enemies of shade trees and shrubs. 

 M. W. Blackman and W. O. Ellis, il N Y 

 State Coll For B v 16,no 26:34-6 '16 

 Spireas 



Beautiful spirea. il Gard Chron Am 22:255 O 



'18 

 Cleaning a pasture of hardback. Rural N Y 



76:915 Jl 28 '17 

 New race of hardy astilbes. A. E. Thatcher. 



il Gard M 25:237-8 My '17 

 On the distribution of abnorinalities in the 

 inflorescence of spiraea Vanhouttei. J. A. 

 Harris, il Am J Bot 4:624-36 D '17 

 Spiraeas. Am Flor 50:3 Ja 19 '18 

 Spiraeas for greenhouse decoration. 11 Gard 

 Chron Am 20:313 Jl '16 

 Spiral gearing. See Gearing 

 Spirituous liquors. See Liquors 

 Spirochaeta 

 Further studies on hog cholera with refer- 

 ence to spirochaeta hyos. W. E. King and 

 R. H. Drake, bibliog il Am Vet M Assn J 

 50:168-88 N '16 

 Spirogyra 

 Abnormal conjugation in spirogyra. J. G. 

 Brown, il Bot Gaz 66:269-71 S '18 



