. The Biological bulletin. Biology; Zoology; Marine biology. 236 LEONARD P. SAYLES Experiment 2. Effect of Return to Sea Water after a Period in Dilutions In an early experiment in this series 6 worms were at first placed in solutions as follows: A into sea water; B into 4/5 sea water; C into 3/5 sea water; D into 2/5 sea water; E into 1/5 sea water; and F into ordinary tap water. Figure 2 gives the data for this experiment. In the case of the control there was a gradual loss up to 93 hours. A sharp drop then occurred during the next 3 hours. Not infrequently there was some loss of weight when
. The Biological bulletin. Biology; Zoology; Marine biology. 236 LEONARD P. SAYLES Experiment 2. Effect of Return to Sea Water after a Period in Dilutions In an early experiment in this series 6 worms were at first placed in solutions as follows: A into sea water; B into 4/5 sea water; C into 3/5 sea water; D into 2/5 sea water; E into 1/5 sea water; and F into ordinary tap water. Figure 2 gives the data for this experiment. In the case of the control there was a gradual loss up to 93 hours. A sharp drop then occurred during the next 3 hours. Not infrequently there was some loss of weight when two successive weighings were 120. X" pz- 100 150 200 250 TIME -IN HOURS 300 350 400 Fig. 3. Effects of return to dilutions after period in sea water and of return to sea water again. A-F, as in Fig. 2. Worms were placed in dilutions at beginning of experiment, returned to ordinary sea water at X, put into the dilutions again at X', and finally returned to sea water at X". made within a few hours of one another. During the first half of this experiment there was a close parallel with the results of Experiment 1. Here, however, specimens were also put into 1/5 sea water and straight tap water. Both of these last mentioned worms died during the first day. The weight increase of E (in 1/5 sea water) was intermediate between F and D. E also survived several hours longer than Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-; Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report; HighWire Press. Lancaster, Pa. [etc. ] : Lancaster Press, inc. [etc. ]
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