94 
probably the hedge-hog. The squirrel feeds on his 
hoard, the badger sleeps in abstinence. 
The marmot, the bobac, the myoxus', the hams- 
ter rat, and the jerboa are torpid. The brown bear 
sleeps: the lemmings are said to feed under the 
snow. 
The alactaga, a species of jerboa, described by 
Griffith in his translation of Cuvier’s Regne Animal, 
is found in the deserts of Tartary, on the sand-hills 
which border the Tanais, the Volga, and the Irtisch. 
“ The least degree of cold reduces these animals to 
their lethargic state ; and what is more remarkable, 
a great degree of heat will produce on them a simi- 
lar effect.” 
The vegetable world presents, during the winter 
of the colder climes, a death-like scene of general 
hybernation. The stems afford hybernacula to the 
dormant energies of perennials. The bulb, which is 
the subterraneous stem of onions, and lilies, and cro- 
cuses, and tulips, like the pupa and chrysolis, pro- 
tects the half-born progeny. The bud is a bulb upon 
atwig. The seed is analogous to the egg. 
Migration. 
Nearly allied to the subject of hybernation is that 
of migration. In both cases natural causes operate 
‘ The ancient Romans had their gliraria, in which the glis 
myoxus, or fat dormouse, was fattened for the table. They are 
still eaten in Italy, and Martial says, they are fattest after hyber- 
nation, when they have had only sleep instead of food on which 
to fatten. Griffith Rodentia, p. 148. 
