248 Scraps in Natural History. 



24. Mus musculus, Linn., Domestic Mouse. 



25. M. agrarius, Gmel., Rustic Mouse. 



26. M. rattus, Linn., Black Rat. 



27. M. decumanus, Pal., Brown Rat. 



28. Arctomys monax, Gmel, Wood Chuk, (Webster.) 



29. Sciurus Carolinensis, Gmel. (leucotis, Bach.,) Grey Squirrel. 



30. S. niger, Linn., Black Squirrel. 



31. S. striatus, Klein, Ground Squirrel. 



32. Pteromys volucella, Linn., Flying Squirrel. 



33. Gerbillus Canadensis, Desm., Jumping Mouse. 



Hystricidce. 



34. Hystrix dorsata, Linn., Porcupine. 



Pachydermata. 

 Equidcc. 



35. Equus cabellus, Linn., Horse. 



36. E. asinus, Linn., Ass. 



JSuidcs. 



37. Sus scrofa, Linn., Hog. 



24. This little animal still maintains its possession of our dwellings, but its 

 numbers have evidently been diminished since the introduction of the brown rat. 



25. The rustic mouse is common. 



26. In a few years after the incursion of the brown or Norway rat, the black rat 

 became totally unknown. 



27. This universally despised creature made its appearance here in 1835. White 

 varieties of this rat have several times been brought to me as a new species; they 

 have always proved to be albinos. 



28. The wood-chuk, so far as I can learn, is seldom met with. 



29. The grey squirrels, for twelve or fifteen years after the settlement of the 

 country, were exceedingly numerous and injurious to the corn-fields. At present, 

 their numbers are not objectionable, barely furnishing sufficient game for our 

 sportsmen. I have seen several white squirrels (albinos) of this species. 



30 31, 32. Of these, the black squirrel is the rarest; the pretty ground squirrel 

 often greets the eye, as it skims along the prostrate tree; and the flijing squirrel 

 is frequently captured in cutting down hollow trees ; five or six of these animals 

 generally being found together. 



33. This year (1843) I surprised one of these little creatures in a thinly-grown 

 wheat field. By four or five leaps it reached its retreat in the ground, where it 

 escaped. It must be comparatively rare, as I have not yet met with any of our 

 farmers who are acquainted with it. 



34. Several porcupines have been killed in the suburbs of Richmond within a 

 few years past. I have a fine specimen in my collection, captured near this town. 



