INDEX W. 



113 



getable matter on solutions containing sul- 

 phates, 57. 



Lankester (Dr. E.) on deposits in springs, 

 rivers and lakes, from the existence of in- 

 fusoria, 72. 



Lee's (John Campbell) notice of a meteoro- 

 logical journal fortheyearl 840, kept by, 32. 



Lemon (Sir C, Bart.) on the agricultural 

 products of Cornwall, 83. 



Lepidosiren, two specimens of, from Macart- 

 ney Island, 72. 



Lias formation, on the genus Cardinia as cha- 

 racteristic of the, 65. 



Lichens, white crystalline substance obtained 

 from, 53. 



Liebig (Prof.), abstract of a letter from, to 

 Dr. Playfair, 53. 



Light, certain points of the wave-theory of, 

 25. 



, some investigations on the phaenomena 



of thin plates in polarized, 26. 



Lloyd (Rev. Prof.) on some investigations 

 on the phaenomena of thin plates in polar- 

 ized light, 26. 



on simultaneous changes of the mag- 

 netic elements at different stations, 26. 



Loan fimds in Ireland, 93. 



Lode, copper, heave of a, 64. 



Longchamps (M. E. de Selys), projet d'ob- 

 servations annuelles sur la periodicite des' 

 oiseaux, 73. 



Lucas (P. B.) on two new fasciae connected 

 with the muscles of the himian eye, 80. 



Macgowan (Dr.) on empyema, 82. 



Machine for calculating the numerical values 

 of definite integrals, 35. 



, new calculating, 39. 



Machinery of the granite quarries of Dart- 

 moor, 105. 



Magnetic elements, simultaneous changes of 

 the, at different stations, 26. 



Magnetic needles and bars, preservation of, 

 from oxidation, 41. 



Mammals of Devonshire, distribution, &c., of 

 the, 68. 



Manchester, income and expenditure of cer- 

 tain families of the working classes in, 90. 



Manures considered as stimulants to vegeta- 

 tion, 47. 



Marshall (John) on the fall of rain in low 

 and high ground near Hallsteads in Cum- 

 berland, 42. 



Mathematics, 23. 



Mechanics, 99. 



Medical science, 77. 



Menheniott, on the fossil organic remains of, 

 61. 



Mexico, new glirine animal from, 70. 



Mineral veins, models for illustration of the 

 succession and dislocations of, 67. 



Monts de piete of Rome, Paris, and other 

 cities on the continent, 91. 



Moore (Dr. E.) on the discovery of organic 

 remains in a raised beach in the limestone 

 cUflf under the Hoe, at Plymouth, 62. 



1841. 



Moore (Dr. E.) on the strata penetrated in 



sinking an Artesian well at the Victoria 



spa, Plymouth, 63. 

 Moseley (Henry) on a machine for calculating 



the numerical values of definite integrals, 



35. 

 Mountains, influence of, on temperature in 



the winter in certain parts of the northern 



hemisphere, 28. 

 Mount Batten, on specimens from the slaty 



rocks of, 64. 

 Mummies, on two Peruvian, 75. 

 Muscles of the human eye, on two new 



fascise connected with the, 80. 



Nasmyth (Mr.), letters respecting his paper 



on the structure of the teeth, 3. 

 on the microscopic structiu-e of the 



teeth, 14. 



on the structure of the epithelium, 15. 



Natural history as a branch of education, 77. 

 Neild (W.) on the income and expenditure 



of certain families of the working classes 



in Manchester and Dukinfield, in 1836 



and 1841, 90. 

 New Holland, geographical distribution of 



the animals of, 68. 

 Nitrogen, on determining the amount of, in 



organic bodies, 54. 

 Northern hemisphere, influence of mountains 



on temperature in winter in certain parts 



of the, 28. 

 North sea, tide of the, 22. 



Oiseaux, projet d'observations annuelles sur 



la periodicite des, 73. 

 Opium, value of, as a remedy in rheumatism, 



78. 

 Opossum, gi-eat dog-headed, 70. 

 Organic remains, discovery of, in a raised 



beach, in the hmestone cliff, under the 



Hoe, at Plymouth, 62. 

 , fossil, of Cornwall, and of Bodmin and 



Menheniott, 61. 

 Owen's (Prof.) letters respecting Mr. Na- 



smyth's paper on the structure of the 



teeth, 4. 

 on a Thylacinus, the great dog-headed 



opossum, 70. 



Paddle-wheel and screw, propulsion of ves- 

 sels by the trapezium, 101. 

 Paddle-wheels, Truscott's plan for reefing, 



102. 

 of steam-engines, plan for disengaging 



and reconnecting the, 102. 

 Palaiozoic rocks, occmTcnce of some minute 



fossil crustaceans in, 64. 

 Paracyanogen, production of silicon from, 54. 

 Paris, monts de piete of, 91. 

 , state of education in the polytechnic 



school at, 96. 

 Parnell (E. A.) on restrained chemical action, 



51. 

 ' on some subjects connected with the 



sulphocyanides, 51. 

 I 



