APPENDIX III 



The following papers are more or less directly concerned with differential sus- 

 ceptibility, chiefly with differential death and toxic effect. Material and agents used 

 are given. Algae: Child, 1916^, e, 191 7<^ b, 1919/, KCN, ethyl alcohol, HgCL, CuSO^, 

 H ion (HCl), OH ion (KOH, NaOH), neutral red, KMn04, stahng water, also un- 

 published data on a number of species exposed to ultra-violet radiation and to visible 

 light with sensitization by eosin which show the same susceptibility gradients as with 

 chemical agents. Protozoa: Hyman, 1917, Amoeba, KCN; Bovie and Barr, 1924, 

 Amoeba, ultra-violet; Bills, 1924, Paramecium, alcohols; Child and Deviney, 1926, 

 Paramecium and other ciliates, KCN, NH4OH, NH4CI, NaOH, NaHC03, NaHC03-|- 

 C0„ CH3COOH, HCl, H.SO^, neutral red, methylene blue, ultra-violet radiation, 

 visible light after sensitization by eosin, lack of oxygen; Merton, 1929, Vorticella, 

 formol, acetic acid, pilocarpine, alcohol; Monod, 1933, ciliates, ultra-violet. Coelen- 

 teras Child and Hyman, 1919, three species of hydra, KCN, ethyl alcohol, ethyl ether, 

 neutral red, methylene blue, Janus green; Weimer, 1928, hydra, KCN; Hyman, 

 1920ft, Tubularia, KCN, ethyl ether; Child, 1919^, hydroids, KCN, ethyl alcohol, 

 ethyl ether, ethyl urethane, HCl, MgS04 LiCl, neutral red, methylene blue, ig2sa, 

 blastulae and planulae of hydromedusae, Phialidium, Gonothyraea, Stomatoca, KCN, 

 HgCL, neutral red, methylene blue, 1926a, Corymorpha, KCN, ethyl alcohol, ethyl 

 ether, ethyl urethane, chloretone, HCl, NaOH, NH^OH, NH^Cl, LiCl, strychnine 

 sulphate, nicotine, caffein, neutral red, methylene blue, hypotonic sea water, sunlight 

 after sensitization by eosin; E. J. Lund, 1931, Obelia, KCN. Ctenophora: Child, 

 1917c, KCN, 1933a, KCN, ethyl alcohol, ethyl ether, chloretone, HCl, NaOH, 

 KMnO^, neutral red, methylene blue. Platyhelminthes: various species of planarians; 

 Child, 1913ft, 1919c, 1919c, 1930, 1933c, KCN, alkahne, neutral, and acid solutions, 

 ethyl alcohol, ethyl ether, chloretone, NH4OH, hypotonic and hypertonic salt solu- 

 tions, distilled water, lack of oxygen; Behre, 1918, KCN at different temperatures; 

 J. W. MacArthur, 1920, acids and bases, 1921, dyes; Buchanan, 1923ft, 1926ft, effects 

 of anesthetics on susceptibility to KCN, 1930, distilled water and hypertonic salt solu- 

 tions; Buchanan and Levengood, 1939, serum antibodies; Sivickis, 1923, KCN; Hin- 

 richs, 1924a, caffein; Strandskov, 1934, i937, X-rays; Wiercinski and Child, 1936; 

 Wiercinski, 1939, supersonic vibrations; differential susceptibility of planarians to 

 formahn, nicotine, strychnine sulphate, ultra-violet, and radium has also been deter- 

 mined and is similar to that with other agents; Stenostomum, Child, 1924ft, Fig. 42, 

 KCN, methylene blue; Stylochus, a poly clad, developmental stages and adults; Wata- 

 nabe and Child, 1933, KCN, alkaline and neutral, chloretone, hypotonic and hyper- 

 tonic solutions, methylene blue, a-naphthol. Annulata: Hyman, 1916a, microdrilous 

 oligochetes, KCN; Child, igi^d, developmental stages of polychetes, KCN, HgCL, 

 NaOH; Hyman and Galigher, 1921, Lumbriculus, KCN; Parker, 1929, Nereis, KCN; 

 Castelnuovo, 1932a, Limnodrilus, KCN; Kawaguti, 1932, Branchiura, methylene blue. 

 Echinoderms: Child, 1915a, eggs and developmental stages of starfish, KCN, 1916a, 



734 



