: 
98 INDEX II. 
Waves, recurrence of symmetrical, 121. Waves, order of succession of the crests “of, 
, ordinates of the mean normal curve, 128. Ree ee 
122, ; | Weber (Prof. Wilhelm) on the continuance 
, investigation of secondary, 124. of magnetic and meteorological observa- 
Oat barometric differences of, 125, 126, tions, 14. a 
127. 
——, elements of, 127. | Xyphiide, 276. 
INDEX I. 
TO 
MISCELLANEOUS COMMUNICATIONS TO THE 
SECTIONS. 
Aci, phosphoric, in ashes of plants, 35. Ansted (Prof.) on working and_ ventilating 
Actinism, influence of, in disturbing electri- the coal-mines of the north of England;) 
cal forces, 29. with reference to the accidents that occur 
Actino-chemistry, on, 29. in such mines from the explosion of fire- 
Agassiz (M.) on the fossil bodies regarded damp, 53. ; 
_by, as the teeth of a fish, 56. Antigua, on fossil fish from, 56. 
Agricultural labourers, on the state of the, in | Armstrong (W. G.) on a colossal hydro-elec- 
the county of Norfolk, 89. tric machine, with a notice of some phe- 
Ajiry’s (Prof.) examination of theoretical ex- nomena attending the production of elec- 
planation of a new polarity in light, 7. tricity by steam, 30. 
Alder (Mr.) on a new genus of Mollusca Nu- | Arvicola, on the genus, 62. 
dibranchiata, 65. Assafcetida, on the oil of, 33. 
Algebraic equivalents, on, 1. Ashes of plants, on the, 34, 35, 36. 
Allman (Prof.), description of the fruit of | Asturias, on the coal deposits of the, 49. 
some of the Hepatice, 71. Atmospherical changes, on great, 20. 
, ona monstrosity occurring in Saxifraga | Aurora borealis, on the nature and origin of 
Geum, 72. the, 22. 
Alloys, on the voltaic reduction of, 30. Auscultation, on an instrument to assist in 
Alten, description of the lightning and thun- the discovery of foreign bodies by, 80. 
der at, on August 16, 1844, 19. 
America, on fog-rings observed in, 19. Balfour (E.) on the migratory tribes of cen- 
——, on the ethnography of, 77. tral India, 78. 
, Vital statistics of, 90. Ball (J.) on practical means for the advance- 
Americans, on the, 80. ment of systematic botany, 72. 
Amylogenic bodies, 31. —— on the specific characters of plants, 
Analyses, ashes of plants, 34, 35, 36; oats, considered in morphological connexion, 74. 
35; narcotic plants, 836; wheat, 36; fuci, | Ball (Robert) on noises produced by one of 
37, 38. the Notonectide, 64. 
Anderson (Prof.) on the caustics produced | Bashforth (F.) on a machine for finding the 
by two mirrors in rotation, 9. numerical reots of equations, and tracing 
Andrews (Prof.) on the Irish species of Ro- a variety of useful curves, 3. 
bertsonian Saxifrages, 74. Bedford level, changes in the river drainage 
Anemometer, on a new, 18. of the, 45. 
Animals, on the mechanical action of, on hard | Binney (E. W.) on fossil trees at St. Helen’s, 
and soft substances during the progress of Lancashire, which exhibit Stigmaria as 
stratification, 52. their roots, 52. 1 
--—, on the fossil elephantine, of India, | Bird sculptured on the tomb of an, officer of 
62. . the household of Pharaoh, on a gigantie;) 
Anser, on hybrids of the genus, 62. |) 6a. 
