738 



Atisländische Literatur. 



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— 4* Rose, R. C, After-ripening and germination of seeds of Tilia, Sambucus. 

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— 5* Haas, A. R, C, Effect of anesthetics upon respiration. },■]■] — 404. — Mc- 

 Dougal, D. T., Richards, H. M., and Spoehr, H. A., Basis of succulence in plants. 

 405—416. — Harvey, Le Roy H., A coniferons sand dune in Cape Breton Is- 

 land. 417 — 426. — Evans, A. T., Embryosac and enibryo of Pentstemon secundi- 

 florus. 427 — 436; I Taf. — Bailey, J. W., Depressed Segments of oak stems. 

 438 — 441. — Harvey, R. B., Importance of epidermal coverings. 441 — 444. 



— 6* Bailey, J. W., Structure development and distribution of so-called bars 

 or rims of Sanio. 449 — 468 ; 3 Taf. — Steil, W. N., Apospory in Pteris sul- 

 cata L. 469 — 483; 2 Taf. — Clayton, E. E., Hydrogen Cyanide fumigation. 

 483 — 500. — Tehon, L. R., Studies of some Porto Rican fungi. 501 — 511. i Taf. 



Bd. LX VIII, 1919. I * Walker, L. B., Development of Pluteus admirabilis and 

 Tubaria furfuracea. i — 21; 5 Taf. — Waterman, W. G., Development of root 

 Systems under dune conditions. 22- 53. — Stevens, F. L., and Dalby, N., Some 

 Phyllachoras from Porto Rico. 54 — 60: 3 Taf. — Osterhout, W. J. V., Appara- 

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 A corn-pollinator. 63 — 64. — 2* Bassler, H., A sporangiophoric Lepidophyte 

 from the Carboniferous. "ji — 109; 3 Taf. — Stout, A. B., Intersexes in Plan- 

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 134 — 146. — Arthur, J. C, Errors in double nomenclature. 147 — 148. — 3* 

 Vestal, A. G., Phytogeography of the eastern Moutain Front in Colorado. I. Phy- 

 sical geography and distribution of Vegetation. 153—193- — Bonazzi, A, On 

 nitrification. III. The isolation and description of the nitrite ferment. 194 

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 Stevens, F. L., and Dalby, N , A parasite of the tree fern (Cyathea). 222 — 226; 

 2 Taf. — Hill, J. B., Anatoniy of Lycopodium reflexum. 226 — 231. — 4* Kemp- 

 ten, F. E., Origin and development of the pycnidium. 233 — 261; 6 Taf. — 

 Cribbs, J. E., Ecology of Tilia americana. I. Comparative studies of the foliar 

 transpiring power. 262 — 286. — Weston, W. H., Repeated zoospore emergence 

 in Dictyuchus. 287 — 296; i Taf. — Hoagland, D. R., Relation of nutricnt Solu- 

 tion to composition and reaction of cell sap of barley. 297 — 304. — Weather- 

 wax, F., Paraffin solvents in histological work. 304 — 306. — 5* Woo, M. L., 

 Chemical constituents of Amarantus retroflexus. 313 — 344. — Dupler, A. W., 

 Staminate strobilus of Taxus canadensis. 345 — 366; 2 Taf. — Rigg, G. B., and 

 Thompson., T G., Colloidal properties of bog water. 367 — 379. — Ramaley, 

 F., Vegetation of undrained depressions on the Sacramento plains. 380 — 387. 



— J. M. C, Aaron Aaronsohn. 388 — 389. — 6* Weaver, J. E., and Mogens, A., 

 Relative transpiration of coniferous and broad-leaved trees in autumn and 

 winter. 393 — 424. — Hendricks, H. V., Torsion studies in twining plants. 

 425 — 440. • — Schertz, F.M., Early development of floral organs and embryonic 

 structures of Scrophularia marylandica. 441 — 450; 3 Taf. — Thompson, W. F., 

 Companion in bast of Gnetum and angiosperms. 451 — 460. — Knudson, L., 

 and Smith, R. S., Secretion of amylase by plant roots. 460 — 466. — Belyea, 

 H. C, Ray tracheid structure in second growth Sequoia washingtoniana. 467 

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 474 — 47'^! I- Taf. 



Bd. IjXIX, 1920. I * Thaxter, R., Second note on certain peculiar fungus-para- 

 sites of livmg insects. i — 21; 5 Taf. — Clayberg, H. D., Upland societies of 

 Petoskey-Walloon Lake region. 28 — 53. — Kanda, M., Field and laboratory 



