216 



REl'OKT — 1873. 



in the Devonian beds of South Devon, 

 A. Champernowne on, 77 ; H. Wood- 

 ward on, 77. 



Steam, R. Sutclifte on the economical 

 generation of, 216. 



-r , R. Sutcliffe on the economical uti- 

 lization of, 217. 



-boilers, J. Waugh on the preven- 



tion of incrustation in, 219. 



•Steamer, Channel, J. White on a form 

 . of, 219. 



Stewart (Prof. Balfour) on tethereal 

 friction, 32. 



Stone-dressing in Bradford, A. Neill on, 

 214. 



implements from British Guiana, 



R W. Rudler on, 148. 



*Struthers (Prof C. A.) on the diverti- 

 culum of the small intestine in man, 

 considered as a rudimentary structure, 

 134. 



Stump-Cross Caverns at Greenhow, near 

 Pately Bridge, J. W. Ellis on the, 80. 



Sulphuric acid, Dr. H. E. Armstrong on 

 the action of, on ethylaniline and di- 

 methylaniliue, G2. 



*Sun, J. N. Lockyer on the elements in 

 the, 65. 



Sun-spot periodicity, 0. Meldrum on the 

 periodicitj' of cyclones and rainfall iu 

 connexion with the, 43. 



Superposed vibrations, Prof A. S. Her- 

 schel on a new form of pendulum for 

 exhibiting, 48. 



Sur I'irrationalite de la hase des loga- 

 rithmes hyperboliques, par Ch. Her- 

 mite, 22. 



*Surface of zero curvature and finite 

 extent, Prof. Clifibrd on a, 9. 



Sutcliffe (R.) on the economical genera- 

 tion of steam, 216 ; on the economical 

 utilization of steam, 217. 



Symmetric conductors, and the con- 

 struction of lightning-conductors. Prof 

 Zenger on, 41. 



Symons (G. J.) on Negretti and Zam- 

 bra's test-gauge solar-radiation ther- 

 mometer, 47. 



Synge (Major-Geu. M.) on purity and 

 impurity in the use and abuse of 

 water, 200. 



Taylor (J. E.) on the occurrence of ele- 

 phant remains in the basement beds of 

 the Red Crag, 91. 



*Tea, adulteration of, A. H. Allen on the 

 detection of, 62. 



* Telegraphy, A. de Marcoartu on the 

 application of, to navigation and nie- 



; teorology, 43, 



Temperature, V. II. Wcnham on the 



intiueuce of, on the elastic force of 



certain forms of springs, 49. 

 * , S. B. J. Skertchly on experiments 



on evaporation and, made at Wis- 



beach, 44. 



and pressure. Dr. A. Schuster on 



the influence of, on the widening of 

 the lines in the spectra of gases, 39. 



Thanet sand, W. Whitaker on the oc- 

 currence of, in the S.W. part of Suf- 

 folk (Sudbury), 92. 



Theory of numbers, J. W. L. Glaisher 

 on certain propositions in the, deduced 

 from elliptic-transcendent identities, 

 10. 



Thermal conductivities of certain rocks, 

 notes by Prof Herschel of some ex- 

 periments on the, 40. 



* conductivity, Prof. G. Forbes on, 



40. 



Thermometer, Negretti and Zambra's 

 test-gauge solar-radiation, G. J. Sy- 

 mons on, 47. 



, Rutherford's minimum, a new form 



of, devised and constructed by Mr. 

 James Hicks, G. M. Whipple on, 50. 



Thomas (W. C.) on the centre-rail rail- 

 way, 219. 



Thomson (J.) on the gorges and rapids 

 of the Upper Yangtsze, 173. 



Tisley (S. C.) on a compound pendulum 

 apparatus, 48. 



*Tomes (C. S.) on the development of 

 the armadillo's teeth, 134. 



Topley (W.) on the correspondence be- 

 tween some areas of apparent upheaval 

 and the thickening of subjacent beds, 

 91 ; and G. A. Lebour on the Whin 

 Sill of Nortliumberland, 92. 



*Trade-routes in Persia, Major St. John 

 on, 173. 



* through Mongolia and Zungaria, 



Ney Elias on, 169. 



Tramways, the Lisbon steam-, 1873, 'W, 

 H. Barlow, jim., on, 210. 



*Tree-aloe from S.E. Africa, T. Baines 

 on a, 104. 



* Triple tangent planes, W. Spottiswoode 

 on, 24. 



*Turcomania, E. D. Morgan on Russian 

 accounts of Khiva and, 172. 



Tylor (E. B.) on the relation of morality 

 to religion in the early stages of civi- 

 lization, 148. 



Undercurrents of the Bosphorus and 

 Dardanelles, Dr. Carpenter on the, 41. 



'■^^enus, M. Jaussen on the application 



I 



