Band 142. No. 4. XL. Jahrgang. 



1. Allgemeines. 



Andrews, F. M. 1918. Improved forms of Maximow's automatic 



Pipette. (Proc. Indiana Ac. Sc. 1917 [1918]. p. 169—173. 4 f.) 

 Canizares, F. G. 1918. El Jardin botanico del Instituto de segunda 



Ensefianza de la Habana. (Habana, 1918. 169 pp. ill.) 

 Goodspeed, T. H. 1918. Method of replacing paraffin solvent with 



paraffin. (Bot. Gaz. LXVI. p. 381—382.) 

 Nichols, G. E. and H. St. John. 1918. Pressing plants with double-faced 



corrugated paper boards. (Rhodora. XX. p. 153 — 160.) 

 Peltier, G. L. and D. C. Neal. 1918. A convenient heating and steri- 



lizing out fit for a field laboratory. (Phytopathology. VIII. p. 



436-438. 2 f.) 



n. Anatomie. 

 Cf. IV. Plaut. 



Bailey, F. W. and W. W. Tupper. 1918. Size Variation in tracheary 

 cells. I. A comparison between the secondary xylems of vascular 

 cryptogams, gvmnosperms and angiosperms. (Proc. amer. Ac. Arts 

 and Sc. LIV. p. 149—204. 6 f ) 



Hayata, B. 1918. On the systematic of the stelar System. (^Bot. Mag. 

 Tokyo. XXXII. p. [279]— [297]. Japanese.) 



m. Biologie. 



Harris, J. A. 1918. Secondary parasitism in Phoradendron. (Bot. 



Gaz. LXVI. p. 275—276.) 

 Lovell, J, H. 1918. The flower and the bee. (New York, Ch. Scrib- 



ner's Sons. 1918. 8o. XVII, 286 pp. 119 f.) 

 Wenrich, D. H. 1918. Stylonichia impaled upon a fungal filament. 



(Science. N. S. XL VIII. p. 602—604. f. 1.) 



IT. Morphologie, Teratologie, Befruchtung, Cytologie. 



Andrews, F. M. 1918. Studies on pollen. (Proc. Indiana Ac. Sc. 1917 



[1918]. p. 163.) 

 Dudgeon, W. 1918. Morphology of Rumex crispus. (Bot. Gaz. XLVI. 



p. 393-420. 21 f. 3 pl.) 

 Dufrenoy, J. 1918. Pine needles, their significance and history. (Bot. 



Gaz. LXVI. p. 439—454. 29 f.) 

 <5ross, R. 1917. Beobachtungen und Versuche an lebenden Zellker- 

 nen. (Halle, 1917. 8°. 75 pp. 2 T. 15 F.) 

 Hirase, S. 1918. On the fertilization of Pinus Thunbergii, Pari. (Bot. 



Mag. Tokyo. XXXII. p. [343]— [356]. Japanese.) 

 Meyer, F. J. 1918. Der Generationswechsel bei Pflanzen und Tieren 



als Wechsel verschiedener Morphoden. (Biol. Zbl. XXXVIII. 



p. 506—522.) 

 N[ieuwland], J. A. 1918. Teratological notes. (Amer. Midland Nat. 



V. p. 231.) 

 Nothnagel, M. 1918. Fecundation and formation of the primary endosperm 



nucleus in certain Liliaceae. (Bot. Gaz. LXVI. p. 143-161. 3 pl.) 

 Olive, E. W. 1918. The cytological structure of Botryorhiza Hippo- 



cratea. (Brooklyn bot. Gard. Mem. I. p. 337—341. 1 pl.) 

 Osterhout, W. J. V. 1918. The nucleus as a center of oxidation. 



(Brooklyn bot. Gard. Mem. I. p. 342—347.) 

 Patvardhan, G. B. 1918. Penetration of scion by stock. (Journ. ofHere- 



dity. IX. p. 187-188. 1 f.) 

 Pfeiffer, N. E. 1918. The sporangia of Thismia americana. (Bot. Gaz. 



LXVI. p. 354—363. 1 pl.) 

 ?laut, H. 1918. Ueber die morphologischen und mikroskopischen 



Botan. Centralblatt. Band 142. 1919. 4 



