INDEX (I. 



139 



tion across the Silurian rocks in 



Westmoreland, 67. 

 Mathematics, 1 . 

 Matias bark, a substitute for Peruvian 



bark, 61. 

 Mechanical science, 124. 

 Medical statistics of Birmingham, 115. 

 Mersey, river, on the rapid changes 



which take place at the entrance of, 



n. 



Metalliferous veins, on electrical cur- 

 rents on, 34. 



Metals, deposition of, by voltaic ac- 

 tion, 38. 



Meteoric iron found in the United 

 States, observations on, 54. 



Meteorological observations made at 

 Great Malvern, 14. 



Meteorological phaenomena in the 

 Ghats of Western India, 15. 



Mica, its use in polarizing light, 6. 



Mines, on the temperature of the earth 

 in, 19- 



Morrison (Lieut.) on an analogy be- 

 tween the atomic weights of gases 

 and the expansions of the primitive 

 colours of the solar spectrum, 29. 



Motion of points or atoms subject to 

 any law of force, on the, 24. 



Microscope, oxy-hydrogen, its use in 

 exhibiting the phaenomena of po- 

 larization, 8. 



Middlemore (R.) on the treatment of 

 capsular cataract, 96. 



on an operation for artificial 



pupil, 96. 



Mining districts of Northumberland, 

 Durham, and Yorkshire, inquiries 

 into the statistics of, 120. 



Mirrors, on bending silvered plate 

 glass into, 7. 



Murchison (R. I.) on the carbonife- 

 rous and Devonian systemsof West- 

 phalia, 72. 



Muriatic acid, proofs of its existence 

 in the stomach during digestion, 58. 



Murray (Sir J.) on neuralgia, 106. 



Museums, local, on the formation of, 

 65. 



Nasmyth (J.) on the bending of sil- 

 vered plate glass into mirrors, 7. 

 on the cellular structure of the 



ivory, enamel, and pulp of the 



teeth, 109. 

 Nerves, on finding with exactness the 



position of the, 102. 

 New York and Greenwich, difference 



of longitude between, 27. 

 Norwich, on the origin of sand-pipes 



in the chalk near, 65. 



Observatories, on the best position of 

 the magnets, in reference to their 

 mutual action, 12. 



Observatory, portable, 14. 



Odontology, 109. 



Optical phaenomena, on some, 1. 



Oram (T.) on the ceconomy of fuel, 

 69. 



Organic remains of saurians and sau- 

 roid fishes, 73 ; of the limestones 

 and slates of Sonth Devon, 69 ; of 

 the Warwick sandstone, 75. 



— — substances, apparatus for the 

 analysis of, 57 ; on the elementary 

 constitution of, 58. 



Orkney, zoological researches in, 79. 



Osler(F.), account of some indications 

 of the anemometers at Plymouth 

 and Birmingham, 17. 



Oxford University, academical statis- 

 tics of, 119. 



Palaeontology, 69, 73, 75. 



Parsey (Mr.) on natural perspective, 

 29. 



Parkin (T.) on a new construction of 

 wooden railway wheels, 131. 



on railway foundations, 132. 



Paving roads and streets with wood, 

 on, 127. 



Pendulum, comparative, 24. 



Peritonitis and schirrhoma, extraor- 

 dinary case of, 96. 



Phillips (R.) on the synthetical com- 

 position of white prussiate of pot- 

 ash, 56. 



Photogenic process, Daguerre's, re- 

 marks on, 3. 



Photometry, on, 7. 



Physics, 1. 



Plants, recently introduced into the 

 list of natives of England, 92, 



Plate glass, silvered, on bending it 

 into mirrors, 7. 



