CONTENTS 



I. INTRODUCTION 7 



II. THE BEHAVIOR OF GLOVES OF FROG'S SKIN, WITH THE OUTSIDE OF THE 

 SKIN TURNED OUTWARD, WHEN FILLED WITH ElNGER'S SOLUTION 

 APPROXIMATELY ISOTONIO WITH FROG'S BLOOD, AND SUSPENDED IN 

 THE SAME SOLUTION 10 



III. THE BEHAVIOR OF HEALTHY LIVING FROGS WHEN TRANSFERRED FROM 



WATER AT ONE TEMPERATURE TO WATER AT ANOTHER 15 



IV. THE BEHAVIOR OF GLOVES OF FROG'S SKIN, WITH THE INSIDE OF THE 



SKIN TURNED OUTWARD, WHEN FILLED WITH RlNGER'S SOLUTION 

 APPROXIMATELY ISOTONIC WITH FROG'S BLOOD AND SUSPENDED IK 



THE SAME SOLUTION 16 



V. THE BEHAVIOR OF THE GLOVES OF FROG'S SKIN, WITH THE OUTSIDE OF 

 THE SKIN TURNED OUTWARD, WHEN FILLED WITH A HYPOTONIC 

 RINGER'S SOLUTION AND SUSPENDED IN A HYPERTONIC RINOER'S 

 SOLUTION APPROXIMATELY ISOTONIC WITH FROG'S BLOOD L'7 



1. The behavior of gloves of frog's skin filled with a Singer's 



solution containing 6.5 grams of NaCl to 1000 cc. of H t O, 

 when suspended in a Ringer's solution containing 7 grams 

 of NaCl to 1000 cc. of H t O 28 



2. The behavior of gloves of frog's sTcin filled with a Ringer's 



solution containing 6.25 grams of NaCl to 1000 cc. of H t O, 

 when suspended in a Ringer's solution containing 7 grams 



of NaCl to 1000 cc. of H,0 30 



8. The behavior of gloves of frog's skin filled with a Ringer's 

 solution containing 6 grams of NaCl to 1000 cc. of H t O, 

 when suspended in a Ringer's solution containing 7 grams 



of NaCl to 1000 cc. of H,0 32 



Controls of above experiments: The behavior of gloves of 

 frog's skin filled with a Ringer's solution containing 7 

 grams of NaCl to 1000 cc. of H t O, when suspended in 

 the same solution 



VI. ON THE TRANSPORT OF WATER THROUGH THE SKIN IN THE LIVING 

 FROG WITH URETERS LIGATED, WHEN SUSPENDED IN A HYPERTONIC 



SALINE SOLUTION 34 



VII. ON THE NATURE OF THE FORCE WHICH MAY DRIVE WATER THROUGH 

 THE SKIN IN A DIRECTION COUNTER TO THAT CAUSED BY OSMOTIC 



PRESSURE 38 



VIII. ON A POSSIBLE EXPLANATION OF THE CONTINUOUS FLOW OF LYMPH 

 BETWEEN THE CAPILLARIES OF THE BLOOD-VASCULAR SYSTEM AND 

 THOSE OF THE BLINDLY-ENDING LYMPHATICS 50 



