338 Sir Everard Home's account , &c. 
Fig. 7. A top view, of one of those glands ; the figures 
3, 4, 5, 6, and 7, are magnified 50 times in diameter, or 2500 
in superficies. 
Fig. 8. A small portion of the lowermost part of the gul- 
let of the common swallow. 
Fig. 9. A small portion of the lowermost part of the gul- 
let of the black bird, both figures are magnified 15 times 
in diameter, or 225 times in superficies. 
