289 



Redaction es verstanden hat, zwischen den geschichtlichen Publicationen dieser Art leicht 

 drohenden Gefahren, der Scylla und Charybdis des Zuviel und des Zuwenigen, glücklich 

 durchzusegeln. 



Prof. W. W. Beman and D. E. Smith, Plane and solid Geometry. 

 Boston, Ginn & Co., 1895. IX and 320 pages, Octavo, with figures. cloth. 

 Price Dollar i,85. 



Admirably executed. The whole make-up of the text and figures is a model for 

 many similar textbooks which spoil the eyes of the compositors and students. 



Prof. W. Valentiner, Handwörterbuch der Astronomie. Lieferung 

 II u. III. Breslau, E. Trewendt, 1896. gr. 8. Seite 129 — 368 mit Ab- 

 bildungen. Preis jeder Lieferung M. 3,60. 



Wir haben bereits früher (Naturae Novitates 4 895. Nr. 4 9) auf dieses vor- 

 zügliche Werk hingewiesen, welches leider nur langsam fortschreitet. Sobald ein fertiger 

 Band vorliegt, werden wir denselben einer eingehenden Würdigung unterziehen. 



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