154 EARLY EMBRYOLOGY OF THE CHICK 



septa growing in from the body wall. Consideration of the 

 details of their formation would lead us into stages of develop- 

 ment beyond the scope of this book. Those interested in 

 following the later embryology of the chick will find in the 

 appendix references to more exhaustive books, and to a few of 

 the more recent original papers on its development. 



