£08 
BIRDS OF PASSAGE. 
Opposite climates of the torrid and frigid zones, the former will 
have no visitors but in winter, and the latter none excepting 
in summer. The intermediate space on the surface of the 
globe is the chief scene of their operations. Ins here that the 
temperature of the atmosphere undergoes great variations, but 
never arrives at extremes j in consequence of which, every 
wanderer of the feathered tribe has the power of selecting a 
summer residence in the temperate zone, which is agreeable 
to its feelings and appetite. The different kinds of these birds 
can naturally subsist in places where the spring has made less 
or greater advances ; for the red -start precedes the swallow, 
and the swallow precedes the cuckoo. This is the reason why 
the different species travel in distinct parties, resembling the 
legions of a numerous army marching in the same direction $ 
the whole body being in motion together, alternately to the 
north and south. I shall close the essay with a table exhi- 
biting the order of this procession in Westmoreland. The first 
column contains the names ; the second gives the times of 
migrating northwards, which is when the winter birds depart, 
and the summer visitors arrive j the third gives the times of 
migrating southwards, that is, when the summer birds depart, 
and the winter visitors arrive. 
TABLE. 
