1907] CURRENT LITERATURE 215 
the first parts of the book were published before that congress, and in these, 
therefore, a somewhat different nomenclature had been used, but the deviations 
from the Vienna rules are corrected at the end of the volume. 
There is much in the book of great importance to American botanists. Gen- 
era like Philadelphus, Cercocarpus, Holodiscus, Spiraea, Prunus, Amelanchier, 
Crataegus, and other American genera of Saxifragaceae, Drupaceae, Rosaceae, 
and Pomaceae are exhaustively treated and many valuable notes on the aflinities, 
the systematic value, and the conception of American species are included. It 
would of course be impossible to give here further details of the author’s treat- 
ment of American species and of his notes and remarks, nor would it be of much 
use to select at random a few of them. 
The book will prove not only indispensable to every student of cultivated 
trees and shrubs, but will also be of great importance to every botanist engaged 
in the study of the American, European, and Asiatic floras. In fact the work 
will amount almost to a representation of the whole ligneous flora of the tem- 
perate and colder regions of the northern hemisphere when it is completed, and 
it is to be hoped that the following volume or volumes will show the same thorough 
and careful treatment as the one now before us.—ALFRED REHDER. 
Errera Botanical Institute 
Two sumptuous volumes have recently appeared, containing the papers 
originating in this Institute.2_ As a publication the Recueil was planned by the 
late Professor Lio ERRERA in 1902, and the first four volumes were intended to 
contain all the work done before that date in the botanical institute of which he 
was the inspiring director. But of these four only volume 1 is now first pub- 
lished. Volume 5 appeared in rgoz and contained papers prepared in 1900- 
tg01. Volume 6 continues the series, under the editorship of Professor Mas- 
SART, the successor of the lamented founder, whose name the institute now bears. 
In volume 1 as a frontispiece will be found an excellent photogravure of 
Professor ERRERA; ground plans of the institute are inserted; there are eleven 
papers by ErrerA himself, mostly reprinted, bearing on glycogen in the plant 
kingdom, beginning with his thesis in 1882 and closing with the posthumous and 
incomplete papers which have already been noticed in this journal.s Other 
reprints are: 
The titles of three papers and the text of one, by Emme Laurent, all dealiag 
with the physiology of yeasts, and another on the formation of starch from 
organic solutions; GEORGES CLAUTRIAU’s paper (1895) on glycogen in fungi, 
2 Recueil de l'Institut botanique (Université de iicanasgs publié aa: L. ERRERA. 
Tome I, avec cing planches. Glycogéne, amidon et autres réserves non azotées 
Recueil de l'Institut botanique Léo ‘iceee abound de Brezelles) pe noe par 
JEAN Massart. Tome VI, avec vingt-sept figures dans le texte et vingt-trois planches. 
Bruxelles: Henri Lamertin. 1906. Each jr. 25. 
3 Bot. GAZETTE 41:370. 1906, and 43:79. 1907. 
