132 
INDEX. 
Russell (J. S.) on the motion of float¬ 
ing bodies, 16. 
-on the solid of least resistance, 
3 07. 
Safety lamp, 55, 56. 
Saunderson (Mr.) on yew trees, 76. 
Scanlan (M.) on a fluid obtained in 
manufacturing pyroxylic spirit, 40. 
Schiede (Dr.) on the Oxalis tuberosa, 
Solarium tuberosum , Cevadilla , A- 
mole , &c., 77. 
Sculpture, production of busts, &c. by 
machinery, 112. 
Sedgwick (Prof.) on the Silurian and 
Cambrian systems, 59. 
Silurian system of rocks, on the, 59. 
Smith (J.) on some fossil trees, 63. 
Soda, chloride of, its use in fever, 104. 
Solid of least resistance, on the, 107. 
Sound, interference of, 13. 
•-, experiments on, 14. 
Spain, on the geology of, 61. 
Speech, by mechanical means, 14. 
Statistics, 113. 
Steam-engines of Cornwall, 108. 
•—-—, on improvements in, 113. 
Stevelly (Prof.), description of a self¬ 
registering barometer, 109. 
Stokes (Dr.) on the effects of accumu¬ 
lations of liquids or of air within the 
cavity of the thorax, 98. 
Stotherd (Lieut.) on a patch of granite 
in Cavan, 58. 
Sulpho-methylic acid, salts of, 42. 
Sykes (Lt.-Col.) on the measurement 
of heights, 25. 
-- on the geographical range of 
birds, 69. 
—— on waees in India, 118. 
■-on education in the Deccan, 125. 
Svkes (Lt.-Col.), statistics of Australia. 
* 125. 
Taylor (J.) on the duty of steam-en¬ 
gines in Cornwall, 108. 
Thermometers, measurement of heights 
by, 25. 
Toad found imbedded in a mass of new 
red sandstone, 72. 
Tobacco, Irish and Virginian, compa¬ 
rative value of, 37. 
Torsion balance, 18. 
Trail (Dr.) on the geology of Spain, 
61. 
Typhus fever, on, 101. 
Versclioyle (Archdeacon) on the trap 
dykes of Mayo and Sligo, 59. 
Vibrations of a cylindrical tube, 12. 
Vignoles (Archdeacon) on bog timber, 
76. 
Water, on certain compounds with, 45. 
West (Dr.) on the geographical posi¬ 
tion of Cape Farewell, 66. 
-on the formation of wood, 75. 
Wheatstone (Prof.) on electrical light, 
11 . 
-on the imitation of the human 
speech, 14. 
Whewell (Rev. W.) on a new anemo¬ 
meter, 29. 
- on the application of physical 
science to geology, 65. 
Williams (Rev. D.) on some fossil 
plants, 63, 
Wood, on the formation of, 75. 
Zinc, its protection of other metals 
from corrosion, 36. 
Zoology, 67. 
END OF THE FOURTH VOLUME. 
Printed by Richard Taylor, Red Lion Court, Fleet Street, 
