EUROPEAN HERBARIA. 13 
Besides the herbaria already mentioned, there are two 
others in London of more recent formation, which possess the 
highest interest as well to the general as to the American 
botanist, namely that of Professor Lindley, and of Mr. Bent- 
ham. Both comprise very complete sets of the plants col- 
lected by Douglas in Oregon, California, and the Rocky 
Mountains, as well as those raised from seeds or bulbs, which 
he transmitted to England, of which a large portion have from 
time to time been published by these authors. Mr. Bentham’s 
herbarium is probably the richest and most authentic collec- 
tion in the world for Labiate, and is perhaps nearly unri- 
valled for Leguminose, Scrophularinee, and the other tribes 
to which he has devoted especial attention ; it is also particu- 
larly full and authentic in European plants. Professor Lind- | 
ley’s herbarium, which is very complete in every department, 
is wholly unrivalled in Orchidaceous plants. The genus-covers 
are made of strong and smooth hardware paper, the names 
being written on a slip of white paper pasted on the lower cor- 
ner. This is an excellent plan, as covers of white paper, in 
the herbarium of an active botanist, are apt to be soiled by 
frequent use. The paper employed by Dr. Lindley is 183 
inches in length and 11} inches wide, which, as he has him- 
self remarked, is rather larger than is necessary, and much too 
expensive for general use. 
The herbarium of Sir William J. Hooker, at Glasgow, is 
not only the largest and most valuable collection in the world, 
in the possession of a private individual, but it also comprises 
the richest collection of North American plants in Europe. 
Here we find nearly complete sets of the plants collected in 
the arctic voyages of discovery, the overland journeys of 
Franklin to the polar sea, the collections of Drummond and 
Douglas in the Rocky Mountains, Oregon, and California, as 
well as those of Professor Scouler, Mr. Tolmie, Dr. Gaird- 
ner, and numerous officers of the Hudson’s Bay Company, 
from almost every part of the vast territory embraced in their 
operations from one side of the continent to the other. By an 
active and prolonged correspondence with nearly all the bot- 
anists and lovers of plants in the United States and Canada, 
