MAMMALIA. 
160 
the Indians cut up the little balls of the males with their tobacco as 
they afford no castor.” * 
In the year 1732 the immortal Linnaeus was sent, by the Royal 
Academy of Upsal, on a tour through Lapland. In his personal 
journal he says : “ I set out alone from the city of Upsal on Eriday 
May 12, 1732, at eleven o’clock, being at that time within half a 
day of twenty-five years of age.” Sixteen days later, when at a 
place called Genow, the young naturalist had the opportunity, 
apparently for the first time, of examining a recently killecl Beaver. 
Of it he said, “ I inquired concerning the food of this animal, and 
was told it was the bark of trees, the birch, fir, and mountain ash, 
but more especially the aspen, and the castor becomes larger in 
proportion as the Beaver can get more of the aspen bark. This 
confirmed the truth of what Assessor Rothman formerly asserted, 
that castor is secreted from the intermediate bark of the poplar, 
which has the same scent, though not quite so strong : hence it is 
to be presumed that a decoction of this bark, if the dose were suf- 
ficiently large, would have the same medicinal effects. I wonder 
no naturalist has classed this animal with the Mouse tribe [which 
term was then applied to all Rodents], as its broad depressed form 
at first sight suggested to me that it was of that family.” f Thus, 
only a century and a half ago, appeared the germ of the idea that 
recognized in the structure of the Beaver its affinities with the 
members of the order Glires, to which order it was assigned by 
Linnaeus in his great work, the Systema Nattirce. 
Thomas Pennant said: “The skins are a prodigious article of 
trade ; being the foundation of the hat manufactory. In 1763 were 
sold, in a single sale of the Hudson s Bay Company, 54,670 skins.” J 
* Documentary History of New York, Vol. IV, pp. 120-121. 
j- Laclresis Lapponica, Vol. I, 1811, pp. 88-89. 
\ Synopsis of Quadrupeds, 1771, p. 258. 
