408 
SWALLOW S. Crass fl. 
¢ with a night’s reft, took their fight in the morn-_ 
“ing”*, This vaft fatigue, proves. that their 
journey muft have been very great, confidering the 
amazing {wiftnels of thefe birds in all probability 
they had croffed the Atlantic ocean, and were return- 
ing from the fhores of Senegal, or other parts of 
Africa; {o that this account from that moft able 
and honeft feaman, confirms the later information 
of M. Adanjfon. 
Mr. White, on Michaelmas day 1768, had the 
good fortune to have ocular proof of what may 
reafonably be fuppofed an actual migration of fwal- 
lows. Travelling that morning very early be- 
tween his houfe and the coaft, at the beginning 
of his journey he was environed with a thick fog, 
but on a large wild heath the mift began to,break, 
and difcovered to him numberlefs fwallows, cluf- 
tered on the ftanding bufhes, as if they had rooft- 
ed there: as foon as the fun burft out, they. were 
inftantly on wing, and with an eafy and placid flight 
proceeded towards the fea. After this he faw no 
more flocks, only now and then a ftrageler +. 
* Phil. Tranf. Vol. LI. Part 2. p. 459. 
+ In Kalm’s Voyage to America, is a remarkable inftance 
of the diftant flight of fwallows; for one lighted on the fhip 
he was in, September 2d. when he had paffied only over two 
thirds of the Atlantic ocean. His paflage was uncommonly 
quick, being performed from Deal to Philadelphia in lefs than 
fix weeks ; and when this accident happened, he was four- 
teen days fail from Cape Hinlopen. 
This 
