■NATiNG Vegetables. Perhaps this name might likewife be applied to thofe vegetables, which are natives of 
warm, fouthern countries, but gradually accommodate themfelyes to the rigorous winters of northern climates. I 
think, it was the late Mr. John Hunter who firft ventured to conjecture, that man himfelf is not incapable of be¬ 
coming torpid. ProfefTar Fabricius is of the fame opinion.* Nor is it at all improbable. In his internal flruCiure, 
in the temperature of his blood, man differs in no very effential circumftances from fome of thofe animals, which, 
in certain climates, almoll conftantly pafs into the torpid Hate. 
S- XXXIII. 
It is important for our purpofe, in the difculTion of the queflion of the difappearance of birds, that many of 
thofe fpecies which are believed to be migratory are annually feen on their paifage; in the fpring from the fouth to 
the north, and in the autumn from the north to the fouth. Some of thefe paffengers migrate in immenfe flocks, 
whilfl: others go and return more individually. Mr. Bartram has feen, in the autumn, large flocks of all our four 
fpecies of Swallows, on their return fouthward from Pennfylvania, through Carolina, Florida, &c. and in the fpring 
on their return to the northward again.f The immenfe migrations of the Paflenger-Pigeons are well known to every 
body in this country. I have already hinted at the great flights of Ffingilla triflis, Motacilla Sialis, Loxia Cur- 
yirollra, Fringilla ——-— (Hemp-Bird), and Anas canadenfis, which are annually cbferved on their paflage to the 
fouth.| I.might mention a number of other fpecies which move in fimilar bodies. I fball content myfelf with men¬ 
tioning one. This is the Brown Crane of Pennant. This fpecies is found in Mexico. It is deferibed by Hernandez, 
who calls it, Toquilcoyotl.^ They arrive in Florida and Carolina, from the fouth, in the months of Hebruary and 
March. The flocks, which are immenfe, are heard and feen very high in the air. Their phalanx is in the form of 
the letter > . They pafs over Pennfylvania, the Jerfies, New-York, &c. and continue their rout as far north as Hudfon’s 
Bay, where they breed, and in the autumn retire to the fouth again. It is curious, however, that in their return, they 
do not move in the fame form in which they came. They now form two or three circles interfering each other, often 
changing the figure of the body, and forming again, as they are joined by other fquadrons. Milton*s deferiptiou 
tof the flight of the Common Crane|| of the did world equally applies to our fpecies. 
“ Part loofely wing the region: part more wife, 
In common, rang’d in figure wedge their way, 
Intelligent of feafons, and 'fet forth 
'Their aery caravan, high over feas 
Flying, and over lands with mutual wing 
Eafing their flight. So fleers the prudent Crane 
Her annual voyage, borne on winds j 
The air flotes as they pafs, fann’d with unnumber’d plumes.” 
Paradise Lost. Book VII. 425—432. 
§. XXXIV. 
1 fear,, I fliall be thought to have taken up too much time in endeavouring to prove, that the greater number of 
our birds which difappear on the approach of winter, retire to fouthern and milder climates. Indeed, I am of opinion, 
that the migration of our birds is a fadl fo well eflablifhed in the natural hiftory of thefe animals, that it will not, in 
general, be doubted, except by thofe perfons who are propenfe to doubt on every fubjedl. In Afia, in Africa, and 
in Europe, where obfervations on this fubject have long been made, the migration of many fpecies has been com¬ 
pletely eflablifhed. In our own times, it has been particularly obferved that many fpecies vifit different countries of 
Europe in the fpring, and leave them in the autumn, in the fame manner as other fpecies vifit and leave us at the 
fame feafons of the year. 
• I am forry, that I have not now an opportunity of examining Mr. Fahricius’s memoir. I fpcak, from memory, of his opinions: but I hope I do not err. 
f See Appendix l.,P. 16. t Sec Page vlii. f. XIII. § Pag 44. Cap. cxlviii. U Ardea Grus of Linnsus. 
