Bibliographies of Botanj r . 429 



Wolff, Emil Th. 



Analytical, classified catalogue of 25 periodicals. Each unit of 

 classification separately indexed (by authors); general index rerum at 

 end of book. Very accurate and useful both in chemistry and in plant 

 physiology, as it covers the formative period of the latter science when 

 numerous important papers were published in chemical periodicals. 



Col. 693709: Ernahrung, Keimen und Wachsen der Pflanzen. 



Price: Mk. 6. 



Die chemischen Forschungen auf dem Gebiete der Agricultur und Pflanzen- 

 physiologie. Bin Supplementband fiir die Lehrbiicher der Agriculturchemie, 

 physiologischen Chemie und der rationellen Landwirtschaft . . . Leipzig, 

 J. A. Earth, 1847. 



VIII, 549 p. 



Copious foot-rotes giving references and historial recapitulations. 



Excellent reference-work for earlier literature on plant nutrition, 



plant chemistry and physiology of soils. 

 PHENOLOGY. 

 Ihne, Egon. 



Geschichte der pflanzenphanologiscben Beobachtungen in Europa nebst Ver- 

 zeichniss der Schriften, in welchen dieselben niedergelegt sind . . . 



(Beitrage zur Phanologie. Giessen, Ricker, 1884, p. 1178.) 



cf. Drude, 0., Deutschlands Pflanzengeographie, 1896, p. 425427. 

 Hoffmann, H. 



Phanologische Beobachtungen. 



(In Ber. d. Oberhess. Gesellsch. f. Natur- u. Heilkunde, No. 24 (1886). 



Continued in: Nrs. 25 (1887); 26 (1889), 27 (1890); 28 (1892), p. 12 



and 37.) 



Each of these reports has a list, international in scope, of literature 



on phenology covering the year previous. 

 Ihne, Egon. 



Phanologische Beobachtungen (Jahrgang 1891). 



(Ibid. No. 29 (1893).) 



The list of literature for this report was begun by Hoffmann and 



completed by Ihne. 



(Jahrgang 1892.) 

 (Ibid. No. 30 (1895).) 



- (Jahrg. 1894.) 

 (Ibid. No. 31 (1896).) 

 Includes the year 1893. 



- (Jahrg. 1895.) 

 (Ibid. No. 31 (1896).) 



- (Jahrg. 1896.) 



(Ibid. No. 32 (1897-99).) 



(Jahrg. 1897.) 



(Ibid. No. 32 (189799).) 



- (Jahrg. 1898.) 



(Ibid. No. 33 (18991902).) 



(Jahrg. 1899.) 



(Ibid. No. 33 (18991902).) 



- (Jahrg. 1900.) 

 (Ibid. No. 34 (1905).) 



- (Jahrg. 1901.) 



(In Abhandl. d. Naturhist. Gesellsch. zu Niirnberg XIV (1902).) 



