208 Botanisches Centralblat. 



des Obstbaues. 3., erweiterte u. umgearbeitete Auflage. (Wien 

 1910. 8°. XV, 466 pp. 5 färb. Taf. u. 355 Fig.) 



Müller, O. 1909. Beiträge zur Erforschung der Angosiuraalkaloide. 

 (Braunschweig, 1909. 8 U . 72 pp.) 



Pammel, L. H. 1909. The delayed germination of seeds. (Rept. 

 british Ass. Adv. Sc. Winnipeg. Sect. K. p. 673—674.) 



Park, W. 1909. The vitality of seeds. (Lancashire Nat. II. 16. p. 119.) 



Planchon, L. et A. Juillet. 1909. Etüde sur quelques fecules 

 coloniales. (Ann. Inst. col. Marseille. XVII.) 



Russell, E. J. 1908. The nitrogen problem in crop production. 

 (Journ. roy. agric. Soc. England LXIX. p. 104 — 114.) 



Solenow, N. 1909. Die Bodenacidität und ihre Bedeutung für den 

 Kulturboden. (Diss. Jena 1909. 8". 68 pp.) 



Spillman, W. J. 1909. The Hybrid Wheats. (Bull. 89. Washington 

 Agric. Exp. Station (Pullman, Wash.). 28 pp. 6 fig.) [In eas- 

 tern Washington where the rainfall is over 20 inches (548 mm.) 

 Little Club wheat is chiefly grown; where the rainfall is about 18 

 inches (497 mm.) the Red Chaff is chiefly grown; where the rain- 

 fall is less than 17 inches (472 mm.) the Blue Stem is chiefly 

 grown; all three of these varieties are spring wheats. In 1899 

 eleven of the best winter wheats were crossed with Little Club 

 or Red Chaff. Some 15 strains selected from these hybrids have 

 been tested and eleven found to yield over the average for Red 

 Russian, 42 busheis per acre (37,72 hectoliters per hectare), and 

 some were found to yield much more. Some 39,000 acres (15783) 

 ha.) were planted in Washington State during the autumn of 1908. 

 The crosses that yielded the hybrids reported upon were made 

 by Prof. E. E. Elliott. — W. T. Swingle.] 



Splendore, A. 1910. Appunti sulle tre specie di piante di tabacco 

 descritte dal filosofo e medico olandese Neander. (Boll. tecn. 

 Coltiv. Tabacchi Scafati. IX. 3. p. 155—162. 3 tav.) 



Stapf, O. 1909. The history of the Wheats. (Rept. british Ass. Adv. 

 Sc. Winnipeg. p. 799—808.) 



Straus, A. 1909. Der Tabakbau im Grossherzogtum Baden und 

 seine natürlichen Verbindungen. (Halle 1909. 8°. 152 pp. 1 Karte.) 



Thornber, W. S. 1909. Forest, Shade and Ornamental Trees in 

 Washington. (Bull. 90. Washington agric. Expt. Stat. (Pullman, 

 Wash.). 55 pp. 8 figs. 1909 ) [About 150 species and varieties 

 of trees described briefly and their use in the State of Washing- 

 ton pointed out. — W. T. Swingle.] 



Wildemail, E. de 1909. Note sur des plantes largement cultivees 

 par les indigenes en Afrique tropicale. (Ann. Inst. col. Marseille. XVII.) 



Zade, A. 1909. Der Flughafer (Avena fatua). (Diss. Jena 1909. 8°. 48 pp.) 



XXI. Biographie, Necrologie. 



Coker, W. C. 1910. Avisitto the grave of Thomas Walter. (Journ 



Elisha Mitchell sei. Soc. XXVI. p. 31—42. 2 p.) 

 Gerstlauer, L. 1910. Max Britzelmayr f. (Ber. bayer. bot. Ges. 



XII. 2. p. 69—72. 1 Portr.) 

 Jaekson, B. D. 1910. Dr. Alexander Blackwell. 1709—1747. 



(Journ. of Bot. XLVIII. 572. p. 193—195.) 

 Verworn, M. 1910. Gustav Fischerf. (Zschr. allg.Phys.XI.2/3.2pp.) 



Ausgegeben: 27 September 1910. 



. 



Verlag von Gustav Fischer in Jena. 

 Buchdruckerei A. W. Rift ho ff in Leidon. 



