THE JULUS TERRESTRIS. 



417 



The liberation of the embryo is a remarkably slow process as 

 compared with the escape of other animals from the egg. In 

 Mr. Newport's observations from ten to twelve hours elapsed 

 before the body of the young Myriapod was so far liberated 

 as to remain only partially enclosed between the two halves of 



THE DEVELOPMENT OF yiiliis terresti'is. (After Newport.) 



I. The embryo on the rupture of the egg. 2, 3. Newly bom Jnlns at the end 

 of the first day. 4. A nine days' old ^«/«j-. 5. y;//«j' on the seventeenth day. 6, On 

 the mneteenth day. 7. On the twentieth day. 8. On the twenty-sixth day. 



the shell, being still attached to its interior by a cord (Fig. 2). 

 So remarkable is its condition at this period that it strongly 

 resembles the expansion of the germ in the seed of a plant 

 rather than the evolution of a Fiving animal. The embryo is 

 perfectly motionless, and the bursting of its shell appears to be 

 effected not by any direct effort of its own, since up to this time 

 it has only acquired the form and external semblance of a living 



B B 



