370 



LIBBIE H. HYMAN. 



TABLE II., a. 



ELECTRICAL GRADIENTS OF Tubularla; HYDRANTH COMPARED WITH NEARBY 

 PORTIONS OF THE STEM AND WITH FAR PROXIMAL PORTIONS OR REGIONS BEAR- 

 ING BRANCHES. 



Each number refers to one individual. Scale of the galvanometer reads with 

 red figures to the right of the zero point, with black figures to the left of zero, 

 hence r means red, and b means black, and numbers accompanying r and b are 

 divisions on the scale. The right electrode is negative when the reading is on red 

 or farther to the right than before; and the left electrode is negative when the 

 reading is on black or farther to the left than before. Hydr., hydranth, br., 

 region of branches, prox., proximal, dist., distal. 



