WILLIAM JACKSON HOOKER. 323 
eighty-four plates, all from his own ready pencil, — a work 
which took rank as a model both for description and illustra- 
tion. In 1828 he brought out, in conjunction with Dr. Taylor, 
the well-known ‘“ Muscologia Britannica,” the second edition 
of which, issued in 1827, is only recently superseded. The 
“ Musci Exotici,” with 176 admirable plates, appeared, the 
first volume in 1818, the second in 1820. These were his 
principal works upon Mosses and the like, —an excellent sub- 
ject for the training of a botanist, and one in which Hooker, 
with. quick eye, skilled hand, and intuitive judgment, was not 
only to excel but to lay the foundation of high excellence in 
general descriptive botany. 
When arranging for a prolonged visit to Ceylon, it appears 
that he sold his landed property, and that his investment of 
the proceeds was unfortunate ; so that the demands of an in- 
creasing family and of his enlarging collections, for which he 
always lavishly provided, made it needful for him to seek 
some remunerative scientific employment. Botanical instrue- 
tion in Great Britain was then, more than now, nearly re- 
stricted to medical classes; the botanical chairs in the uni- 
versities therefore belonged to the medical faculty, and were 
filled by members of the profession. But, through the influ- 
ence of Sir Joseph Banks, as is understood, the Regius Pro- 
fessorship of Botany in the University of Glasgow was offered 
to Hooker, and was accepted by him. He removed to Glas- 
gow in the year 1820, and assumed the duties of this posi- 
tion. Here, for twenty years — the most productive years of 
his life — he was not only the most active and conspicuous 
working botanist of his country and time, but one of the best 
and most zealous of teachers. The fixed salary was then only 
fifty pounds ; and the class fees at first searcely exceeded that 
sum. But his lecture-room was soon thronged with ardent 
and attached pupils, and the emoluments rose to a consider- 
able sum, enabling him to build up his unrivaled herbarium, 
to patronize explorers and collectors in almost every acces- 
sible region, and to carry on his numerous expensive publica- 
tions, very few of which could be at all remunerative. 
The first publication of these busy years was the “ Flora 
