Xll rroeoodings of the Association of American Anatomists 



wall of the inguinal canal, here strengthened by scattered fibers derived 

 from the internal oliliqne and the transversalis, 



3. The inipossil)ility of "conjoined tendon" forming a covering for 

 " direct inguinal hernia,"' it being a thin or thicker portion of trans- 

 versalis fascia according to point of impact. 



4. Formation and description of the fascial compartment in which 

 the femoral vessels lie. The femoral sheath was described as made up 

 solely of areolar tissue. This areolar tissue is continuous with the 

 areolar sheaths of vessels and with the pro- and retro-peritoneal tissue. 



5. Femoral canal does not exist. It is simply a complementary space 

 mesad to the vein, filled with lymphatic structures and areolar tissue. 



GLYCOGEN IN ANIMAL TISSUE. By Simon H. Gage. Laboratory of 

 Histology and Embryology, Cornell University. 



Assuming the correctness of Bernard's generalization, that in the 

 course of development the liver gradually assumes and the rest of the 

 tissues and organs of the body lose the glycogenic function, it was hoped 

 that the presence or aljsence of glycogen in the blind sac. the so-called 

 liver, of Amphioxus might aid in determining its homology with the 

 liver of higher vertebrates. Abundant material was ol^tained directly 

 from the ocean at the Bermuda Biological Station during the session 

 of 1904. 



For comparison the most closely related fresh-water form, the Ammo- 

 coetes, obtained from Cayuga lake inlet, was used. 



In Amphioxus and the related form, Asymmetron, the blind sac was 

 found not to possess a specialized glycogenic function ; but glycogen was 

 found in the intestinal and branchial epithelium, also in the epidermis 

 and the nerve cells of the central nervous system. 



In Ammoccetes, glycogen was found in the liver, the intestinal 

 epithelium, the epidermis, the heart and skeletal muscles, in the central 

 nervous system, cartilage, the notochord and in fat cells. 



In the horse it was found that the glycogenic function was not 

 limited in the adult to the liver, but persists in the skeletal and cardiac 

 muscles. 



The main results gained are then: (a) In some animals at least, 

 the glycogenic function of the adult (and the independently feeding 

 lamprey or Ammoccetes) is not restricted to the liver, Ijut j^ersists as a 

 function of the tissues generally. 



(b) Gh'COgen is apparently present in the Amphioxus and Asymme- 

 tron only foi a short time after feeding. These animals and Ammoccetes 

 are constant feeders and with both a brief fast is sufficient to free them 

 from glycogen. 



