35° Sir Everard Home on the changes the egg undergoes 
Fig. 10. A new laid egg. Natural size. 
Fig. 1 1. A small portion of the yelk of the same egg, with 
the molecule lying on its bare surface, and the external mem- 
brane of the yelk turned aside. Magnified 5 diameters. 
Fig. 12. The molecule hardened in vinegar and laid on a 
black ground. Magnified 10 diameters. 
Plate XXXIII. 
Fig. 1. An egg, opened 4 hours after incubation. Natural 
size. 
Fig. 2. A small portion of the yelk, with the molecule and 
areola under the external membrane of the yelk. Magnified 
5 diameters. 
Fig. 3. The bare molecule, hardened and laid upon a black 
ground. Magnified 10 diameters. 
Fig. 4,. An egg, opened 8 hours after incubation. Natural 
size. 
Fig. 5. A small portion of the yelk, with the molecule and 
enlarged areola lying on its surface under the external mem- 
brane. Magnified 5 diameters. 
Fig. 6. The same molecule with its enlarged areola, har- 
dened, and laid on a black ground. Magnified 10 diameters. 
Fig. 7. An egg , opened 12 hours after incubation. Natural 
size. 
Fig. 8. A small portion of the yelk, with the embryo and 
areola lying on its surface under the external membrane. 
Magnified 5 diameters. 
Fig. 9. The same embryo and areola hardened and laid 
on a black ground. Magnified 10 diameters. 
