Q MORPHOLOGY OF THE 



we are chiefly indebted for the greater part of our knowledge. 

 (Journal of Morphology, Vol. 12. Archiv. fiir Anat. u. Ent- 

 wickelungogeschichte Jahr. 1897. s. 408.) 



He states that this phenomenon occurs in pigs as well as 

 in the human species. This statement I am able to confirm, 

 as weU as to assert that it has also been observed by me in 



Fig, 2. 



Saf^ittal section of an einbrj'O 15^ mm. «, (psophagus. 1. o., leaser omeu- 

 tum. P., pylorus. Pa., pancreas, s. m. a., sup. mesenteric arterj^ Ht.^ 

 heart. I/., liver. jejunum, c. u. c, cavity of umbilical cord, c, colon. 

 p. r., portal vein. g. o., great omentum. 



cats, dogs, and rabbits, and, as he suggests, it is most prob- 

 aV)le that it Avill be proved to be a mammalian characteristic. 



Mall attributes the cause of the entrance of the intestines 

 into the cavity of the umbihcal cord, in the human embryo, 

 to the descent of various abdominal organs, as well as to the 

 great growth of the liver. 



