Geology and Natural History. 243 



salis there are redescribed and well figured 20 Lamarckian species 

 of mollusks and corals described by him between 1801-1819. 

 The studies were made by Dollfus, Boussac, Pervinquiere, 

 Cossmann, Lemoine, and Germain. c. s. 



15. Bine Botanische Tropenreise, Indo-Malayische Vegetations- 

 bilder unci Reiseskizzen ; by Prof. Dr. G. Haberlandt. Second 

 edition. Pp. viii, 290 ; 12 plates and 48 text-figures. Leipzig, 1910 

 (Wilhelm Engelmann). — The first edition of Professor Haber- 

 landt's book appeared in 1893 and soon became widely and favora- 

 bly known on account of its graphic and satisfactory descriptions 

 of various types of tropical vegetation. The work is based on the 

 author's personal observations, most of which were made during 

 a visit to the famous botanical garden at Buitenzorg in Java. 

 Among the many interesting chapters those dealing with tropical 

 trees, tropical leaves, vines, epiphytes, and mangroves should per- 

 haps be especially mentioned, although several of the others treat 

 subjects of equal importance. The twelve plates in the second 

 edition are all new ; nine are made from photographs, while the 

 three others, in color, are reproduced from water-color sketches 

 by the author. a. w. e. 



16. Plant Anatomy, from the Standpoint of the Development 

 of the Tissues, and Handbook of Micro-technic ; by William 

 Chase Stevens, Professor of Botany in the University of 

 Kansas. Second edition. Pp. xv, 379, with 152 text-figures. 

 Philadelphia, 1910 (P. Blakiston's Son & Co.). — The first edition 

 of this excellent work appeared in 1907, and was reviewed in 

 this Journal for April, 1908 (xxv, 363). The most important 

 new matter in the second edition is the chapter on repi'oduction, 

 which includes discussions of the following topics : the reduction 

 of chromosomes, the behavior of hybrids interpreted according to 

 Mendel's Laws, the bearers of hereditary characters, and the 

 theory of pangeneic exchange. A. w. E. 



17. A Text- Book of Botany and Pharmacognosy ; by Henry 

 Kraemer, Ph.D., Professor of Botany and Pharmacognosy in the 

 Philadelphia College of Pharmacy. Fourth edition. Pp. viii, 

 888, with 344 figures, mostly in the text. Philadelphia and Lon- 

 don, 1910 (J. B. Lippincott Company, price $5.00 net). — The first 

 edition of the present text-book appeared in 1902 and contained 

 384 pages ; the second edition, of 1907, had already been enlarged 

 to 840 pages ; while the third edition, of 1908, numbered 850 

 pages. The rapid succession of new editions proves conclusively 

 that there is a strong demand for a work of this character by 

 students of pharmacognosy and that the book in question is well 

 fitted to their needs. In the first part, entitled "Botany," the 

 morphology and classification of plants are clearly treated, with 

 special reference to medicinal plants. In the second part, "Phar- 

 macognosy," detailed descriptions of important drugs are given, 

 their minute structure being fully illustrated by figures. The 

 third and fourth parts are much shorter than the others. The 

 third deals with " Reagents and Microtechnic," and the fourth, 



