Page:Popular Science Monthly Volume 71.djvu/219

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213
AGE, GROWTH AND DEATH

of the rabbit, like the embryonic growth of the chick, proceeds with a speed which is never paralleled by the growth during later stages.

PSM V71 D219 Fourteen stages of the developing rabbit.png

Fig. 37. Fourteen Stages of the Developing Rabbit, after Minot's and Taylor's "Normal Plates." All the figures are magnified four diameters. Nos. 2 to 5 are irregular as to age, but show successive stages of development. The early development is extremely variable and the observations do not yet suffice to determine the average typical condition for each day under nine.

No. 1. Embryo of 7 12 days. No. 8. Embryo of 10 12 days.
No. 2. " 8 14 " No. 9. " 11 "
No. 3. " 8 14 " No. 10. " 11 12 "
No. 4. " 8 " No. 11. " 12 12 "
No. 5. " 8 12 " No. 12. " 13 "
No. 6. " 9 12 " No. 13. " 14 "
No. 7. " 10 " No. 14. " 15 "