INDEX II. 



181 



effects of the concentrated; upon the 

 tissues of living animals immersed in 

 ■water, 103. 



Spectroscope, E. Eay Lankester's obser- 

 vations "with the, on animal substances, 

 101. 



Spectrum, radiant, SirD. Brewster on 

 the, 8. 



" Spedalske " or leprosy, H. J. Ker Por- 

 ter on the prevalence of, in the king- 

 dom of Norway, 144. 



Spence (Peter) on the economization of 

 sulphurous acid in copper-smelting, 

 43. 



Spiller (John) on the preservation of 

 stone, 44 ; on certain new processes 

 in photography, 45. 



Standards, "Warden of the, reasons why 

 the office of, should include standard 

 weights and measru'es of the metric 

 sj'stem in addition to tliose of the im- 

 perial weights and measures, 147. 



Steam-boiler, marine, J. Lewis on an 

 improved, 155. 



*Steam cultivation, David Greig on, 1.55. 



Steel, Dr. J. D. Everett on the results of 

 experiments on the rigidity of, 15-3. 



Steel and iron, Ferdinand Kohn on the, 

 at the Paris Exhibition, 155. 



■ , John Fernie on the, shown at the 



Paris Exhibition, 154. 



Stereoscope, J. Clerk Maxwell on a real- 

 image, 11. 



Stevenson (T.) on a proposal to illumi- 

 nate beacons and buoys, by electricity 

 conveyed through submarine wires 

 connected with the shore, 14. 



Stewart ( Dr. Ealfour) on the errors of 

 aneroids at ^■arious pressures, 20. 



Stone, John Spiller on the preseiwation 

 of, 44. 



Storm-warnings, Colonel Sykes on then- 

 importance and practicability, 27. 



*Sti-eets, Joseph Mitchell on a new mode 

 of constructing the surface of, 156. 



Stuart (Major E.) on the Ylakhs of 

 Mount Pindus, 130. 



Succinic acid, Dr. Maxwell Simpson on 

 the foi-mation of, from chloride of 

 ethylidene, 42. 



Sulphites, Dr. Polli on the antiseptic 

 properties of the, 103. 



Sulphur, I. Lowthian Bell on a method 

 of recovering, and oxide of manganese 

 used at Dieuze, near Nancy, France, 31. 



Sidphm'ous acid, P. Spence on the 

 economization of, in copper-smelting, 

 43. 



Sutherland, C. W. Peach on fossil fishes 

 of the Old Bed Sandstone of, 72. 



Sykes (Colonel) on storm-warnings, 



their importance and practicability, 

 27 ; on the report upon the state of 

 the empire of France, presented to the 

 Senate and Legislative BodA', Febru- 

 ary 1867, 145. 

 *Svmmetry, laws of, A. E. Catton on 

 the, 10. 



*Tait (P. M.) on the population and 

 mortality of Calcutta, 145. 



Taylor (John E.) on the relation of the 

 upper and lower crags in Norfolk, 157. 



Tennant ( Maj or J. F.) on the preparations 

 for observing the total eclipse of 

 August 1868, 5. 



Tertiary and quaternary deposits, Eev. J. 

 Gunn on, in the Eastern Counties, CO. 



*Topaz, A. Claudet on photographic 

 portraits obtained bv single lenses of, 

 10. 



Thermometer, telegraphic. Prof. C. 

 Wheatstone on a new, 11. 



Thompson (Prof. Allen), exhibition of 

 microscopical preparations by, 104. 



*Thoms (P. H.) on community of lan- 

 guage and rmiformity of notation, 

 weights, measures, and coinage, 140. 



Thomson's (Sir W.) Address to the 

 Mathematical and Physical Section, 

 1 ; on a self-acting electrostatic accu- 

 mulator, 16 ; on a series of electro- 

 meters for comparative measurements 

 through great range, 16 ; on volta- 

 convection by flame, 17 ; on electric 

 machines founded on induction and 

 convection, 18. 



*Thruston (John) on evaporation from 

 rain-gauges, 28. 



Thysanura, Sir John Lubbock on some 

 points in the anatomy of the, 91. 



Trichodesmium, Dr. CoUing-wood on, 81. 



Tristram (Eev. H. B.) on the zoological 

 aspects of the grouse-disease, 97. 



* on the districts of Palestine as yet 



imperfectly explored, 131. 



Tunnelling, General Haupt on the ap- 

 plication of machinery to boring and, 

 155. 



Turner (Prof), exhibition of microsco- 

 pical preparations, 104 ; on the ana- 

 tomy of the pilot whale, 104. 



Tussac grass. Dr. "\V. Lauder Lindsay on 

 plant-acclimatization in Scotland with 

 special reference to, 88. 

 Tyndall's (Dr.) deductions regarding the 

 radiant and absoi-ptive properties of 

 vapour, E. Eussell on, 11. 



Ucayali, Messrs. "Wallace and Mayne on 

 a Peruvian expedition up the rivers 

 Pachitea and, 131. 



