652 INDEX. 
Steam, numerical results deducted from Regnault’s experiments on, 541. 
Srevenson (Tuomas) C.E. Account of experiments upon the force of the waves of the Atlantic 
and German Oceans, 23. 
Srevenson (Witi1aAM). On the geology of Cockburnlaw, and the adjoining district, in Berwick- 
shire, 33. 
Swan (Witt1am). Experiments on the ordinary refraction of Iceland spar, 375. On the gradual 
production of luminous impressions on the eye, and other phenomena of vision, 581. 
- 
Temperature of the Earth, on the, 189. 
Temperature of the Ground at Trevandrum, in India, observations on the, 379. 
Terror (Right Rev. Bishop). On the sums of the digits of numbers, 87. An attempt to elucidate 
and apply the principles of goniometry, as published by Mr Warren in his Treatise on the 
Square Roots of Negative Quantities, 345. 
Tuomson (Jamzs). On the effect of pressure in lowering the freezing point of water, 575. 
Tuomson (Witt1am). An account of Carnot’s theory of the motive power of heat; with numerical 
results deduced from Regnault’s experiments on steam, 541. 
Topaz, modification of the doubly refracting and physical structure of, 7. 
Traitu (Tuomas S.) M.D. Memoir of Dr Thomas Charles Hope, late Professor of Chemistry in 
the University of Edinburgh, 419. 
Trevandrum, observations on the temperature of the ground at, 379. 
V 
Vision, on the gradual production of luminous impressions on the eye, and other phenomena of, 
581. 
Vital Afinity, observations on the principle of, 165. 
W 
Warren’s Treatise on the Square Roots of Negative Quantities, 345. 
Water, effect of pressure in lowering the freezing point of, 575. 
Waves of the Atlantic and German Oceans, force of the, 23. 
Witson (Gzorce) M.D. On Wollaston’s argument from the limitation of the atmosphere, as to 
the finite divisibility of matter, 79. On the solubility of fluoride of calcium in water, 145. On 
the action of the dry gases on organic colouring matters, and its relation to the theory of 
bleaching, 475. 
Wind at Sea, method of measuring the strength and direction of the, 455. 
Wottaston’s argument from the limitation of the atmosphere, as to the finite divisibility of matter, 79. 


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