Beard, On the Occurrence of Dextro-rotatory Albumins in Organic Nature. ]f)<) 



pilose. 10. 45 Both Hydra much macerated. This portion of 

 experiment ended. Phenomena observed in no. 2. 10. 22 a. m. 

 Trichodinae still alive and moving on hosts. 10. 45 Hydra still alive. 

 11.15 Hydrae still alive, fluid removed, and fresh rain-water given. 

 This portion of experiment ended. Comparison of the two por- 

 tions shows clearly, that the menstruum (glycerin) was not answerable 

 for the deadly disintegrating effects observed. 



VII. Various undetermined flagellate micro-organisms. Same 

 day. One drop of the stock-solution of T. & A. added to twenty 

 drops of water. 11 a m. Of this mixture one drop added to 

 various flagellate micro-organisms in a cell. 3. 30 p. m. All the 

 flagellate organisms dead, but various "swarm spores", which are 

 vegetable, not animal, were still alive and active. 



VIII. Amoeba. Amoeba in a cell with three drops of water. 

 12. 2 p. m. One drop of the 10 c. c. solution of T. & A. added. 

 12. 8 An Amoeba found under the microscope, and in movement. 

 12. 15 Appears to be contracted and not moving. 12. 22 Slight 

 movements. 12. 27 Globular, no pseudopodia, gyrating slowly. 

 12. 31 Still globular. 12. 33 Slight alterations in shape, but no 

 pseudopodia. 12. 37 Floating freely in the water, and apparently 

 dead. 12. 38 Nucleus escapes. Amoeba seems to be breaking to 

 pieces. 3. 15 p. m. Still much the same, but obviously the cyto- 

 plasm has all gone, and what is left is mainly made up of products 

 of excretion, vacuoles, diatoms, etc. 



IX. Hydra fusca and Trichodina. One Hydra in a cell with 

 many parasitic Trichodinae. 2. 48 Added one drop of the 10 c. c. 

 dilution of T. & A. to three drops of clean fresh rain-water. Hydra 

 contracts at once, and to all appearance is killed instantaneously. 

 The parasites also seem to be killed at once, and they begin quickly 

 to disintegrate. 2. 52 Tentacles of Hydra in disintegration. 3. 16 

 Hydra is a shapeless mass, and the ectoderm is nearly all dissolved 

 off. Experiment ended. 



X. Hydra fusca and Daphnia pulex. Temperature 17 C. Two 

 watch-glasses, the one containing two Hydra and a few Daphnia, 

 the other five Daphnia. In each watch-glass there were twenty 

 drops of clean fresh rain-water. 10. 7 To each glass one drop of 

 the 10 c. c. solution of T. tt A. was added. 10. S 1 ^ The parasitic 

 Trichodinae have fallen off their hosts. 10. 9 Hydra contracted, 

 Daphnia active. 10. 10 The parasitic Trichodinae are dead and in 

 disintegration. 10. 15 Hydra in disintegration, Daphnia alive and 

 active there is absolutely no change apparent in the latter. 

 10. 17 The parasitic Trichodinae are shapeless and disintegrated. 

 10. 18 Each parasitic Trichodina is becoming a mere patch of 

 granules. 10. 22 Trichodina quite disintegrated. 10. 24 Some of 

 the examples of Trichodina are represented merely by a collection 



