Geology and Natural History. 151 
ble amount of letter-press—e only a single leaf or a single page 
accompanying the plate; sometimes a genus or a group is treated 
systematically and more at length. The first and second parts 
nor easily rendered in a description. Among these the species o 
Cotyledon (including Heheveria), now favorite succulents in culti- 
istorisk Forening i Kjobenhawn, for the year 1871, an icle of 
108 pages upon the question whether the Cyathiwn of Euphorbia 
uts. 
language is Danish; but, according to an excellent ee newly in- 
troduce : ; , sible 
uced, a recapitulation is appended in French. rrent 
tabs ic a to have originated with Lamarck, but was com- 
pleted and fully developed, not to say establis rown, 
