WORKS OF REFERENCE. 165 



In the examination of the tissues of the organs of vegetation 

 the student is referred to the following works : 



DE BARY. Vergleichende Anatomic (Leipzig, 1877). An octavo volume 

 of about 660 pages, of which an excellent English translation is newly pub- 

 lished under the title, " Comparative Anatomy of the Vegetative Organs of 

 Phanerogams and Ferns," b\ r A. De Bary. Translated by F. 0. Bower and 

 D. H. Scott, 1884. This exhaustive treatise gives all needful references to 

 the literature of the subject up to 1876. 



MOHL. A r erniischte Sehriften. This is a collection of Hugo von Mohl's 

 most important works, which have appeared from time to time in various 

 journals. 



STRASBURGER. Das botanische Practicum (Jena, 1884). This work, of 

 which an English translation is promised, is of very great use both to beginners 

 and advanced students of Histology. The directions for procuring, preserving, 

 and using material are explicit, and for the most part are conveniently ar- 

 ranged. The volume, of more than 600 pages, is divided into separate studies, 

 such as the structure of the bast and wood of the pine, the anatomy of a few 

 common leaves, etc. 



OLIVER. Bibliography of the Stems of Dicotyledons (Natural History Re- 

 view, 1862 and 1863). A citation of the more important works on the stems 

 of different dicotyledons, arranged according to the natural families. 



For a treatment of the anatomy of the organs of aquatics and parasites, the 

 fully illustrated work of Chatin may be consulted. 



Those curious to examine the diverse and now mostly abandoned views 

 regarding the growth and structure of the stem, will find much of interest in 

 the works of Du Petit Thouars and of Gaudichaud. An account of these and 

 other views will be found in Schleideu's " Principles of Botany" (1849). 



