- 
Botany and Zoology. 73: 
Professor DeBary, in the preface, complains of the patchwork. 
character of parts of the volume. He says that he had hardly 
finished one portion before those preceding it were out of date, 
and by remodelling, such portions necessarily lost something of 
their due proportion. But this is true of all encyclopedic 
treatises, and serves to indicate the magnitude of the work which 
¢Bary has so well done. 
The treatise is in two parts: (1), Forms of tissue; (2), Arrange- 
ment of the forms of tissue. The classification adopted in the 
first part is as follows: Cellular tissue, including epidermis, cork 
and parenchyma; (2), Sclerenchyma, comprising so-called “hard 
bast (3), Secretory reservoirs, or sacs; (4) i 
8 
extrem 1 
| Pbaried will long remain the most valuable digest of vegetable 
Isto og 
it. . Lastly, it 
should be said that the index is a marvel of completeness and 
Accuracy, and places this encyclopedic treatise, which is crowded 
ore details, perfectly at the service of the student, 6.1L. G 
in ing organisms in the air at high altitudes.—A paper by 
1. B. pe F 
Se; about the Swiss Alps, is published in the Geneva Archives des’ 
cuiees for November last (Nov. 15). He shows that the obser- 
. Fre Biolonnayhtinten” 
volume of air, used first a hand air pump, which passed a 
