Botany. 
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have a true 
piration like that of animals, correlative with decomposition, is so 
well made out of late years, (and besides is understood to be inev¬ 
itable if the plant is to do any work), that it was hardly necessary to 
refer back to a work of Liebig fourteen years old, and even then a 
little antiquated, for an enunciation of the opposite doctrine. Then 
the process answering to respiration was overlooked or thought 
unessential, being overshadowed by the vaster, larger and more 
important counterpart process of assimilation. The researches of 
which the results are given in this paper were made to ascertain 
the relations between vegetable respiration, i. e., the expiration of 
carbonic acid, and light, temperature, growth, &c. The results, 
on the whole, were, that changes of temperature within normal 
limits were of little effect and transient when the change was sudden; 
that the influence of light, although generally appreciable, was fee¬ 
ble, and probably indirect. This action, as is well known, goes 
on both in light and darkness, hut under the latter it is not masked 
by the assimilative process. Growth also proceeds indifferently 
under either, or, it would appear prefers darkness. But Mayer 
and Wolkoff conclude (contrary to some of their predecessors) 
that there is no direct relation between growth in length and 
respiration, so that one should in any sense serve as the measure 
of the other. a. g. 
6. Classification ofi Nostochinem. —Dr. Bornet, in a recent 
number of the Annales des Sciences Naturelles, has published a 
most useful key to the genera of the Nostoc tribe, which wa s drawn 
up by the lamented Thuret, shortly before his death. Although it 
was not intended for publication in its present state, it cannot hut 
he useful. The appended enumeration mentions most of the species, 
with leading synonyms. a. g. 
7. Gymocladus in China. —If M. Baillon is right in his identi¬ 
fication by means of pods and loose flowers, there is a second species 
of Gymocladus , our Kentucky Coffee-tree, indigenous to China, in 
the vicinity of Shanghai, where the gummy substance in the legume 
is used as a substitute for soap. This is an additional instance of a 
supposed monotypic genus of Atlantic North America being repre¬ 
sented in the corresponding part of N. E. Asia. Baillon’s notice of 
it is in Bull. Soc. Linn., Paris, Jan., 1875. a. g. 
8. Flora Brasiliensis , fasc. 68, issued in March, 1875, has just 
come to hand. It contains the Amarantacece , by Prof. M. Seu- 
hert of Oarlsruhe, with 26 plates ; and this fascicle completes vol. 
v, part l. There are 13 Brazilian genera ; of which much the 
largest is Gomphrena , with 66 species. The species figured 
which concern the North American flora are Alternanthera achy- 
rantha and Amarantus hypochondriacus. 
9. Das Haustorium der Loranthaceen und der Thallus der 
Rafflesiaceen und Balanophoreen ; von H. Grafen zu Solms- 
Laubach. Halle, 1875. 4to. The present paper is supplemen¬ 
tary to an article on the vegetative organs of phanerogamic 
parasites which appeared in Pringsheim’s Jahrbticher, Bd. vi. 
The writer divides his subject into three parts. The first is 
copyright reserved 
