2 
Light, Absorption of: — 
No. IX. Solutions of Copper, Nickel, and Cobalt Salts in Alcohol and in 
Acetone. 
R. A. Houstoun and A. H. Gray, 
Proc. Roy. Soc. Edin., vol. xxxiii., 1913, pp. 137-146. 
No. X. 
R. A. Houstofn and Chas. Cochrane. 
Proc. Roy\ Soc. Edin., vol. xxxiii., 1913, pp. 147-155. 
No, XI. Conclusion. 
R. A. Houstoun. 
Proc, Roy. Soc. Edin., vol. xxxiii., 1913, pp. 156-165. 
Ritchie, J., and A. J. H. Edwards. — On the Occurrence of Functional 
Teeth in the Upper Jaw of the Sperm Whale. 
Proc. Roy. Soc. Edin., vol. xxxiii., 1913, pp. 166-168. 
Sperm Whale, Functional Teeth in Upper Jaw. 
J. Ritchie and A. J H. Edwards. 
Proc. Roy. Soc. Edin., vol. xxxiii., 1913, pp. 166-168. 
Edwards, A. J. H. See Ritchie, J. 
Physeter macrocephalus, Functional Teeth in Upper Jaw. 
J. Ritchie and A. J. H. Edwards. 
Proc. Roy. Soc. Edin., vol. xxxiii., 1913, pp. 166-168. 
M‘Whan, John. — On the Electron Theory of Thermo-electricity. 
Proc. Roy. Soc. Edin., vol. xxxiii., 1913, pp. 169-176. 
Thermo-electricity, Electron Theory of. 
John M‘Whan. 
Proc. Roy. Soc. Edin., vol. xxxiii,, 1913, pp. 169-176, 
Electron Theory of Thermo-electricity. 
John M‘Whan. 
Proc. Roy. Soc. Edin., vol. xxxiii., 1913, pp. 169-176, 
Ritchie, J. B. — On a Fuller Test of the Law of Torsional Oscillation. 
Proc. Roy. Soc. Edin., vol. xxxiii., 1913, pp. 177-182. 
Ritchie, J. B. — On a Continued Investigation of the Application of the Law 
of Torsional Oscillation to various Metals and Alloys. 
Proc. Roy. Soc. Edin., vol. xxxiii., 1913, pp. 183-193. 
Torsional Oscillation, Law of. 
J. B. Ritchie. 
Proc. Roy. Soc. Edin., vol. xxxiii., 1913, pp. 177-182, 
and pp. 183-193. 
