578 Companion to the Botanical Magazine. 
of the Entomological Club. The proceedings of this body are probably more 
interesting to the parties immediately concerned than to the public. The nume- 
rous contributions received must soon enable them to form a very extensive collec- 
tion of insects. In a journey by Messrs Walker and W. Christy to the neighbour- 
hood of North Cape, six different kinds of butterflies were found in that high lati- 
tude. Varieties of Hipparchia ligea and blandina were so intermixed, that it was 
impossible to separate them, and it is hence inferred that these constitute but a 
single species. In the present state of our knowledge, it would perhaps be safer 
to conclude, that when two closely allied species occur in profusion in the same 
locality, a sexual union sometimes takes place between them, arid hybrids are 
produced partaking of the attributes of both. We know that Pontia napi and 
P. rapae have been observed united, and also H. hyperanthus to H. Janira 
species not so intimately related to each other as H. ligea and H. blandina. 
40. Proceedings of the Entomological Society of France. 41. Proceedings 
of the Entomological Society of London. 42. List of Entomological works. 
Companion to the Botanical Magazine. By SIR W. J. HOOKER, 
Professor of Bot. in the University of Glasgow. Parts xvii. 
xviii. xix. xx. (Continued from page 404 ) 
These numbers are wholly devoted to a biographical account of Mr Douglas, 
and agreeably to our promise (No. IV. p. 404), we present to our readers a notice 
of the interesting Memoir of this lamented Naturalist, and regret that our neces- 
sarily circumscribed limits prevent going into more ample details of a zeal, un- 
surpassed perhaps in the cause of botanical science, and of dangers encoun- 
tered with the most fearless intrepidity, and which at last proved unhappily fataL 
Mr Douglas was born at Scone, near Perth, in 1799, of humble but respect- 
able parents. At a very early age he was sent to school, but seems to have had 
less relish for book-learning than for fishing and bird-nesting and collecting 
flowers, a taste which soon ripened into a fondness for the pursuits and objects 
of Natural History, generally, but in particular of botany. This led to his em- 
ployment in the gardens of the Earl of Mansfield, at that time under the super- 
intendence of Mr Beattie, to whom he was bound as an apprentice for seven years. 
In this situation he devoted his whole heart and mind to the attainment of a 
thorough knowledge of his business, and acquired that decided taste for botani- 
cal pursuits which he so ardently followed in after life. From the gardens at 
Scone he was removed to those of Sir Robert Preston, at Valleyfield, near Cul- 
ross, where his botanical taste was much improved by the rich collection of 
exotic plants cultivated there, and by the contents of a valuable botanical library 
to which he was kindly permitted access. After remaining two years at Valley- 
field, he succeeded in gaining admission to the Botanical Garden at Glasgow, 
where he applied to his professional duties with so great a diligence and success 
as to gain the friendship of all who knew him, and particularly of Dr Hooker. 
He was in consequence recommended by that gentleman to the London Horticultu- 
ral Society, as a botanical collector ; and in 1823 was dispatched to the United 
States, where he procured many fine plants, and enriched the Society's collec- 
tion of fruit-trees. On his return, he was sent in the following year " to explore 
the botanical riches of the country in North- West America, adjoining the Colum- 
bia river, and southward towards California. After a long and tedious voyage 
of above eight months, during which he omitted no opportunity of gratifying 
