Ausländische Literatur. 



■59 



studies of Verbena. 54 — 71; 4 Taf. — Schertz, F. M., A chemical aualysis of 

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— 2* Walster, H. L., Formative effect of high and low temperatures upon 

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 H. R., and Rose, R. C, Effect of salts upon oxidase activity of apple bark. 218 

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 2 Taf. — Stevens, F. L., Dothidiaceous and other Porto Rican Fungi. 248 — 257; 



2 Taf. — Sharp, L. W., Spermatogenesis in Blasia. 258 — 268; i Taf. — 4* 

 Overholser, E. L., Ripening of pears and apples as modified by extreme tem- 

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 of certain factors upon development of air Chambers and diaphrägms. 297 

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 Noyes, H. A., and Weghorst, J. H., Residual effect of carbon dioxide gas addi- 

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— Goodspeed, T. H., and Crane, M. P., Chromosome number in the Sequoias. 

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Bd. LXX. 1920. I* Walker, L. B,, Development of Cyathus fascicularis, C. 

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3 Taf. — Schley, E. 0., Geo-presentation and geo-reaction. 69 — 81. — Lang- 

 don, L. M., Sectioning hard woody tissues. 82 — 83. — Merrill, E. D., Campho- 

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 spinulosum. iio — 125; 3 Taf. — Mac Dougal, D. T., Auxographic measure- 

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 Hawaii's tapestry forests. 137 — 147. — Prankerd, F. L., Statocytes of the 

 wheat haulm. 148 — 152. — Adams, J., Relation of flax to varying amounts 

 of light. 153 — 155. — • Davis, J. J., Pier Andrea Saccardo. 156 — 157. — 3* 

 Candolle, C. de, New species of Piper from Central America. 169 — -189. — Free- 

 man, G. F., Studies in evaporation and transpiration. 190 — 210. — Douglas, 

 G. E., Early development of Inocybe. 211 — 220; 5 Taf. — Williaman, J. J., 

 Pectin relations of Sclerotinia cinerea. 221 — 229. • — Langdon, S. C, and Gailey, 

 W. R., Carbon monoxide a respiration product of Nereocystis Luetkana. 230 

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— 267. — Mac Dougal, D. T., and Spoehr, H. A., Swelling of agar in Solutions 

 of amino acids and related Compounds. 268 — 278. — Cribbs, J. E., Early stem 

 anatomy of Todea barbara. 279 — 314; 2 Taf. ■ — Brown, J. G., Subcortical 

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