158 Beard, On the Occurrence of Dextro-rotatory Albumins in Organic Nature. 



remains breaking away. 12. 12 Shockingly disintegrated. Experiment 

 ended. 



II. Hydra fusca, and its unicellular parasite, Trichodina pedi- 

 culus. Same day and like solution. Three specimens of the common 

 hydra, Hydra fusca, infested with parasitic Trichodina, in ten drops 

 of clean fresh rain-water. 11. 36 Added five drops of the 10 c. c. 

 solution of T. & A. 11. 38 Polypes contracted strongly. Two 

 parasites moving on one. 11. 39 Tentacles of polypes twisted at 

 ends. 11. 40 Parasites gyrating slowly on one polype. 11. 41 

 Parasites dead and fallen off. 11.42 Parasites dissolving and their 

 nature no longer recognisable. 11.50 Tentacles of polypes breaking 

 up. Experiment ended. 



III. Vorticella. In ten drops of clean fresh rain-water. 11. 52 

 Added one drop of the 10 c. c. solution of T. & A. 11. 54 1 / 2 Vorti- 

 cellids still moving. 11. 55 Movements slight, more gyrations. 

 11. 57 More vigorous short, not elongating, gyrations. 12 noon 

 Individuals fully extended. 12. 2 Slow contractions, not complete, 

 remaining half-way. 12. 4 Individuals all dead, that is, in ten 

 minutes. 12. 10 No movements, clarifying and in disintegration. 

 Experiment ended. 



IV. Various flagellate "monads". Same day. Ten drops of 

 water, containing many flagellate "monads". 12. 40 Added one 

 drop of the 10 c. c. dilution of T. & A. All movements cease at 

 once. Experiment ended. 



V. Amoeba and Crustacean "nauplii" . Same day. Amoeba 

 in a cell with five drops of water. 12. 48 Added one drop of the 

 10 c. c. solution of T. & A. There were many Amoebae in this 

 fluid. 1. 2 Amoeba contracting. 1. 6 Another Amoeba apparently 

 in disintegration, no movements. 1. 12 No Amoebae moving, where 

 seen always contracted. At nine p. in. on the same day, that is, 

 eight hours later, two Crustacean "nanplii" were still swimming 

 about in this mixture of water and ferments, and there were no 

 traces of Amoebae. A Desmid appeared to be' unaltered. 



VI. Hydra fusca and Trichodina. Room-temperature 18 C. 

 A stock-solution of 10 c. c. of T. & A. was made up (A solution). 

 Of this 2 c. c. were nearly boiled to destroy the ferments, and as 

 the result a turbid mixture and flocculent precipitate were obtained. 

 This was filtered to obtain the menstruum of the ferment-solution 

 (B solution). 10. 13 Two watch-glasses, each containing two Hydra 

 fusca in ten drops of clean fresh rain-water. 10. 15 Added to 

 watch-glass no. 1 one drop of the A solution, to no. 2 one drop 

 of the B solution. Phenomena observed in no. 1. 10. 17 The 

 parasitic Trichodinae have dropped off the Hydra. 10. 20 One Hydra 

 much contracted. 10. 23 Both Hydra much contracted and one 



