The Biological bulletin (20186055670)

Title: The Biological bulletin
Identifier: biologicalbullet78mari (find matches)
Year: [1] (s)
Authors: Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983
Subjects: Biology; Zoology; Biology; Marine Biology
Publisher: Woods Hole, Mass. : Marine Biological Laboratory
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library



Text Appearing Before Image:
98 C. LADD PROSSER Transfer of fluid from an intact clam heart subjected to nerve inhi- bition by visceral ganglion stimulation to another heart either in a small chamber or perfused in situ has been attempted in several experiments on each of eleven preparations. Direct perfusion of the inhibited heart B
Text Appearing After Image:
FIG. 3. A, effect of brief tetanic stimulation of visceral ganglion at intensities indicated by position in centimeters of inductorium secondary coil. B, effect of repeated frequent stimulation at same intensity (9 cm.). C, reflex inhibition; the mantle was pinched at time indicated by the signal. Time intervals in A and C, three seconds. is very difficult and it is best to fill the pericardium in which the punc- tured heart lies with sea water containing eserine. Intermittent stimula- tion of the visceral ganglion is then carried out for thirty seconds dur- ing which the heart is at a standstill. The two cubic centimeters of