324 Seientifie Intelligence. 
teresting in the extreme. They are characterized by felicity of 
expression and by the exclusion of unnecessary matters, so that 
from first to last the reader’s interest is not permitted to flag. 
Their thoroughly attractive character ensures the early transla- 
tion into other languages. 
The first series comprises eleven lectures upon the histological 
and morphological characters of plants in general. All plant 
organs are placed in two categories, root and shoot. The former 
comprises that part of the plant which on or in a substratum 
serves as a hold fast, and in the latter case acts as an organ for 
ing organs of reproduction which are 
roots. That both fulfill their characteristic func- 
, , leaf, plant-hair. In the first eleven 
lectures the whole field of general histology and morphology 38 
habitat, etc., the most general phenomena presented by 4 
living plant, to wit: osmotic power, turgescence, tension of tis- 
