NEW PUBLICATIONS. 85 
broader sepals, and tip of flowering branches not continued into a 
leafy shoot while the flowering lasts) coincide or hold out. So that 
as yet a second species can hardly be said to be established." 
♦ . [Silliman's Journal, January, 1867.] 
NEW PUBLICATIONS 
Report of Proceedings of the International Horticultural 
1866. (Pp. 428.) 
don from May 22 nd to May 
This volume gives a complete history of the successful flower-show 
of last season, the list of prizes, names of subscribers, etc. etc. Even 
the music performed during the exhibition is recorded ; indeed, the 
only thing we can think of as wanting in the report to render it quite 
exhaustive is the bill of fare, in courses, of the banquet at the Guild- 
hall. 
A more important part of the book, however, is that relating to the 
Congress of Botanists (and Horticulturists). This consists of the 
excellent introductory address of the President (A. De Candolle) and 
of reports, either at length or in abstract, of 32 papers selected out 
of some 50, read or " taken as read " at its meetings. These com- 
munications are printed in the languages in which they were read, 
English, German, or French ; and though the majority are on horti- 
cultural subjects, there are some of strictly scientific interest. 
In physiology, Professor Caspary, of Konigsberg, contributes the 
results of some very elaborate observations on the effects of low tem- 
peratures in altering the direction of the branches of trees, from which 
1 appears that different species are in this respect acted on in diverse 
manners, some moving during a frost vertically upwards, and others 
ownward, whilst a lateral movement towards the left is nearly universal. 
rofessor Morren, of Lk'ge, describes experiments on the effects of 
jertam gases especially of sulphurous acid gas on vegetation ; and Dr. 
ildebrand, of Bonn, adds another case (Corydalis cava) in which the 
aw (perhaps universal) that, for the production of fertile seed, ferti- 
ization be effected by the pollen from a different flower, holds good. 
