﻿220 BOTANICAL GAZETTE [march 



very many cases it will hardly be necessary for the well-informed teacher to 

 look up the reference in the body of the book. This book is not to be con- 

 fused with the Handbook of Practical Botany ''by Dr. E. Strasburger," which 

 is the fifth English edition of a translation by Hillhouse of an earlier edition 

 of Das kleine boianische Practicitju, Some of the defects of this English 

 edition, which bears Professor Strasburger's name, although it does not repre- 

 sent his views, were noted in the April (1902) number of the Gaz 



Charles J. Chamberlain. 



The last two parts of Wlesner's^ Die Rohstoffe des Pflanzefireiches have 

 just appeared from the press of Wilhelm Engelmann. This completes the 

 second volume and the work, and is accompanied by title-pages and index. 

 Unhappily the latter is in two parts, one containing the names of crude 

 materials and the other the systematic names of the plants from which they 

 are derived. The two should have been combined, so as to make only one 

 place to look for any item. But a thorough index is such a boon, and one so 

 often denied us by German authors, that we readily condone a superfluity. 

 The present double Lieferung contains the conclusion of the twenty-third 

 section on fruits (pp. 801-871), and, far out of its place, the rest of the 

 seventh section on woods (pp. 872-1027) by Professor Dr. Karl Wilhelm. In 

 this part a description is given of the woods of deciduous trees, both as to 

 their general and microscopic characters, with remarks on the uses to which 

 the wood is put. Over one hundred kinds are described, some including 

 several species. Of ten or a dozen the botanical derivation is not known. 



C. R. B. 



The first number of Annates Mycotogici under the editorship of H. 

 Sydow, announced in the Botanical Gazette for December, has appeared. 

 It contains 96 pages, and the following list of contributors gives promise of a 

 very strong journal: P. Dietel, H. and P, Sydow, P. A, Saccardo, A. von 

 Jaczewski, C. Wehmer, F. Cavara, L. Matruchot, P. A. Dangeard, and J. 

 Bresadola. It should be suggested to the editor that a table of contents 



would make the journal much more convenient for consultation. — J. M. C. 



NOTES FOR STUDENTS. 



MOLISCH finds'* that the red color produced in the leaves of a number of 

 species of Aloe when brought into open sunlight from the greenhouse is not 

 due to anthocyan but to the red coloration of the chloroplasts themselves, 



3 WiESNER, Julius, Die Rohstoffe des Pflanzenreiches. Versuch technischer 

 Rohstofflehre des Pflanzenreiches. Zweite ganzlich umgearbeitete und erweiterte 

 Auflage. II und 12 Lieferung. 8vo. pp. 801-1071. figs.24g~£g7. Index to both 

 volumes, Leipzig : Wilhelm Engelmann. 1903. M 10. (Two vols, unbound, M 60 ; 

 bound Mtb,) 



-♦MoLiscH, H., Ueber vorubergehende Rothfarbungen der Chlorophyllkorner in 

 Laubblattern. Ber. Deutsch. Bot. Gesells. 20:442-448. 1902. 



