750 



INDEX. 



Carbon, On the Equilibrium of the 

 System consisting of Calcium 

 Carbide, Calcium Cyanide, and 

 Nitrogen, 245, 684. 



Carpenter, F. W.., Feeding Reactions 

 of the Rose Coral (Isophyllia), 

 147. 



Carr, Lucien, resigns Fellowship, 

 726. 



Cartago Earthquake in Costa Rica, 

 An Investigation of the, 716. 



Centrifugal Action, The Electromotive 

 Force produced in Solutions by, 

 107. 



Chapin, H. C. See Baxter, G. P., and 

 Chapin, H. C. 



Charter, Amendment of, 723. 



Chemical Laboratory of Harvard Col- 

 lege, Contributions from, 213, 

 509. 



Chinese Paper Currency of about the 

 Year 1375, 735. 



Circles in S3, Infinitesimal Properties 

 of Lines in S4 with Applications 

 to, 343, 686. 



Circuits, Oscillating-Current, Vector- 

 Diagrams of, 371, 686. 



Coals, The Nature of Some Supposed 

 Algal, 271. 



Cobb, V. See Baxter, G. P., Thorvald- 

 son, T., and Cobb, V. 



Committees, Standing, ai^pointed, 

 734. 



Compositse, On some hitherto unde- 

 scribed or misplaced, 725. 



Conductivity, Electrical, of Argentic 

 Sulphide, Notes on the, 613, 720. 



Coolidge, A. C, accepts Fellowship, 

 683. 



Cooling-Curve Measurements, Inves- 

 tigation of Temperature Errors 

 caused by the Protection Tube 

 in, 720. 



Coral, Rose {Isophyllia), Feeding Re- 

 actions of the, 147. 



Council, Report of, 726; Financial 

 Report of, 732. 



Coupled Circuits, Theory of, under the 

 Action of an Impressed Electro- 

 motive Force, with Applications 

 to Radiotclegraphy, 291, 684. 



Crafts, James Mason, awarded Rum- 

 ford Premium, 733. 



Cross, C. R., Report of the Rumford 

 Committee, 729. 



Curtis, Charles Gordon, presentation 

 of Ruoiford Medal to, 725. 



Curves on Reguh, A Fundamental 

 Theorem Regarding, 686. 



Daly, R. A., The Nature of Volcanic 

 Action, 726. 



Davis, A. McF., Cliinese Paper Cur- 

 rency of about the Year 1375, 735; 

 The Foundation of the Academv, 

 698. 



Dixon, R. B., accepts Fellowship, 683. 



Earthworms, The Reactions of, to 

 Acids, 65. 



Electric Circuits, The Effect of Sudden 

 Changes in the Inductances of, as 

 Illustrative of the Absence of 

 Magnetic Lag and of the von 

 Waltenhofen Phenomenon in 

 Finely Divided Cores, 539. 



Electrical Conductivity of Argentic 

 Sulphide, Notes on the, 613, 720. 



Electrical Inductivities of Certain 

 Poor Conductors, 735. 



Electrical Problems, Certain Mechan- 

 ical Analogies of the, 539. 



Electrical Theory, On Four-Dimen- 

 sional Vector Analysis, and its 

 Application in, 163. 



Electromagnetic and the Thermomag- 

 netic Transverse and Longitudi- 

 nal Effects in Soft Iron, On the, 

 623, 719. 



Electromotive Force, The, produced in 

 Solutions by Centrifugal Action, 

 107. 



Emmons, S. F., Death of, 725. 



Endowment, Committee on, 718. 



Esterly, C. O., Calanoid Copepoda 

 from the Bermuda Islands, 735. 



Eupatoriese, Classification of, 725. 



Evans, G. C, Note on KirchhofT's 

 Law, 95. 



Evaporation, A Method for Determin- 

 ing Heat of, as applied to Water, 

 509. 



