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REVIEWS. 
months and sixteen days/’ ditto “at three years and a half,’' 
ditto “at two years and ten months/’ ditto “at twelve years 
old.” Such observations being “principally made upon short- 
horned cattle/’ a restriction which places the author under 
certain unavoidable disadvantages. 
Still, with the few materials at his command, and with the 
restriction he had imposed upon himself at starting, viz., that 
of observing a “profound silence” on the anatomy and phy- 
siology of the teeth “ rather than attempt a popular descrip- 
tion of them,” our author has acquitted himself very credi- 
tably. He has evinced a good amount of research into 
former authorities on the subject, in particular of the best 
(Girard in particular), and learnt what he could out of them ; 
though he found the majority of them, as compared with 
“ Nature’s book/ 5 unworthy of reliance. And that, we may 
add, will be found by all writers in proportion as they deviate 
from Nature’s straightforward path. As Bracey Clark says 
in his motto, 
“ Naturam expellas, usque dum non recurret ;** 
unless we are resolved to follow her as our guide, the sooner 
we lay down our pen the better. 
It only remains for us to direct our reader’s attention to the 
wrapper of the present number, whereupon they will find 
an advertisement, announcing c An Essay on the Ages of 
the Ox, Sheep, and Pig/ by Professor Simonds. 
