authors' abstract of this paper issued 



BY THK bibliographic SERVICE, OCTOBER 8 



THE REACTION OF SELACHII TO INJECTIONS OF 



VARIOUS NON-TOXIC SOLUTIONS AND 



SUSPENSIONS (INCLUDING VITAL 



DYES), AND TO EXCRETORY 



TOXINS 



E. R. HOSKINS AND M. M. HOSKINS 



New York University and Bellevue Hospital Medical College 



TWENTY-SEVEN FIGURES (SIX PLATES) 



CONTENTS 



Introduction 101 



Material and methods 103 



Experiments 104 



1. Non-toxic solutions 104 



2. Suspensions (vital dyes) 108 



3. Excretory toxins 115 



Discussion 124 



1 . Digitif orm gland 124 



2. Ividney 126 



3. Liver . . . . : 131 



4. Spleen 133 



5. Spiral valve 134 



6. Stomach 135 



7. Gills 135 



8. Body wall 137 



9. Vascular system ; 137 



Summary and conclusions 138 



Literatured cited 141 



INTRODUCTION 



The present study grew out of an attempt to determine the 

 function of the digitiform gland, the development of which has 

 recently been described (Hoskins, '17). This gland is peculiar 

 to selachians, being found in no other group of animals, al- 

 though in Chimaera, there is present in the wall of the posterior 

 portion of the intestine a group of cells which may possibly 

 correspond to it (Disselhorst, '04). 



101 



THE JOURNAL OF EXPERIMENTAL ZOOLOGY, VOL. 27, NO. 2 

 NOVEMBER, 1918 



