288 



INDEX TO AUTHORS' NAMES 



Hartley, C, T. C. Merrill, and A. S. Rhodes. 

 Seedling diseases of conifers, U. S. A. 

 1296. 



Hartmann, O. Nucleus and cytoplasm in 

 Ceratium. (German rev. by Kuttner) 

 641. 



Hartwell, B. L. Orthoclase-bearing rocks as 

 fertilizer, U. S. A. 1661, *73. 



Hartwell, B. L., and F. R. Pember. Soil 

 acidity. (Rev. by Crocker) 1439, 1650. 



Hartzell, F. Z. Computation of daily mean 

 temperatures. 188. 



Harvey, L. H. Coniferous sand dune, Nova 

 Scotia. 288. 



Harvey, R. B. Epidermal coverings and 

 frost injury. 226. — Frost injury. (Rev. 



by Livingston) 1589. (Hawkins, L. 



A., and R. B. Harvey) 1298. 



Haskell, R. J. Fusarium wilt of potato, 

 New York. 1297. 



Hassler, E. Aspicarpa of Paraguay. 1729. 



Havens, L C. Hemolytic streptococci. 

 *1107. 



Hawkins, L. A. (Schultz, T. S., D. Folsom, 

 F. M. Hildebrandt, and L. A. Hawkins) 

 1626. 



Hawkins, L. A., and R. B. Harvey. Physi- 

 ology of parasitism of Pythium debarya- 

 num. 1298. 



Hayden, Ada. Leaf anatomy of prairie 

 plants in Iowa. 227. — Subterranean anat- 

 omy of prairie plants in Iowa. 228. — 

 (Rev. by Yoshii) 273. 



Hayes, H. K. (Harlan, H. V., and H. K. 

 Hayes) 593. 



Hayes, H. K., and R. J. Garber. Wheat and 

 oat breeding, Minnesota. 598. — Breed- 

 ing high-protein maize in U. S. A. 599, 

 *74. 



Hayes, H. K., and P. J. Olson. Crosses in 

 Minnesota maize. 600. 



Haynes, Dorothy. Conductivity and elec- 

 trolytes of vegetable saps. 1407. 



Hays, H. K. (Stakman, E. C, H. K. Hays, 

 O. S. Aamodt, and J. G. Leach) 772. 



Hedrick, U. P., and R. D. Anthony. Twenty- 

 year apple fertilization experiment, 

 New York. 931, *1662. 



Hegner, R. W. Environmental factors in 

 Arcella. 601. — Nuclear cytoplasmic rela- 

 tion in Arcella. 602. 



Heilborn, Gtto. Chromosomes in Carcx. 

 (Rev. by Chamberlain) 168. 



Heimlich, L. F. White County, Indiana, 

 trees. 338. 



Heinrich, M. Clean o&t seed. 603. 



Heinricher, E. Killing of tissue by mucilage 

 from mistletoe seeds. 1299. 



Heintze, Aug. Distribution biology of Po- 

 tentilla multifida. 229. — Distribution of 

 seeds by European Corvidas. 230. 



Hemenway, Martha. (King, C. M., G. J. 

 Ringland, and M. Hemenway) 23. 



Hemsley, W. B., and others. Flora of atoll, 

 Indian Ocean. 339. 



Henderson, M. W. Pyrolaceae and Mono- 

 tropaceae. *1730. 



Henderson, W. F. Experiments with pure 

 cultures of bread yeast. 1108, *1538. 



Hendrickson, A. H. Honey bee as prune 

 pollinator. *231. 



Hennings, Hans. Animal psychology. *604. 



Hepburn, I. P. South African mountain 

 vegetation. 289. 



Hepburn, J. S. Investigation on Nepenthes. 

 1455. — Protease in Nepenthes pitcher 

 liquor. 1511. 



Hepburn, J. S., and F. M. Jones. Antipro- 

 teases in larvae of associates of Sarra- 

 cenia. 1512. 



Hepburn, J. S., and E. Q. St. John. The 

 pitcher liquor of Nepenthes. 1456. 



Heribert,Nilsson, N. Genetics in Salix. 

 (Rev. by Tjebbes) 793.— (German rev. 

 by Renner) 716. 



Heritage, J. P. Sources of alcohol. 1816. — 

 Uses of potato. *75. 



Herlant, Maurice. Hypertonic solutions and 

 accessory asters. 605. — Hypertonic solu- 

 tions and segmentation. '606. 



Hernandez, N. M. Natural fertilizers and 

 tobacco in Philippine Islands. *76. 



Herrmann. Rev. of Kraeplin, K. *160. — 

 Rev. of Roson, F. 161. — Rev. of Miehe, 

 H. *1109. — Germination-energy of pine 

 seeds. *1531. 



Hertel, H. Agriculture in Denmark, 1918. 

 77. 



Hertwig, Paula. Physical and chemical in- 

 jury to germ cells. 607. 



Hertz. Government forest control. 434. 



Herwerden, see Van Herwerden. 



Hesselman, H. Silvicultural practice and 

 soil nitrification. 189. — Pollen dissemi- 

 nation and range of trees. 232. — (Rev. by 

 Nordstedt) 253. — Peridermium pini in 

 Sweden. 1300. — Natural reproduction in 

 pine heaths of Norway. *1633. 



Hessing, J. Variability in grass species. 

 608. 



