INDEX 
TO THE 
PHILOSOPHICAL TRANSACTIONS 
FOR THE YEAR 1849. 
A. 
Acidity of the Urine, on the variations of, 235. 
Anatomy and affinities of the Medusce, 413. 
Annelides, structure of the liver in, 110. 
Antimony, crystalline polarity of, 13. 
Arachnidans, structure of the liver in, 116. 
Arsenic, crystalline polarity of, 17. 
Atlantic, lines of Magnetic Declination in, 173. 
B. 
Bakerian Lecture, 1. 
Barlow (W. H. Esq.). On the Spontaneous Electrical Currents observed in the Wires of the 
Electric Telegraph, 61. 
Birds, structure of the liver in, 123. 
Bismuth, crystalline polarity of, 2. 
Brodie (B. C., Esq.). Investigation on the Chemical Nature of Wax, 91. 
Brom-orcin, 397. 
Bryozoon, structure of the liver in, 109. 
C. 
Carapace of Chelonian Reptiles, development and homologies of, 151. 
Chelonian Reptiles, on the development and homologies of the carapace and plastron of, 151 ; 
definition of the component parts of the Carapace, 152; of the Plastron, 153. Comparison 
of the thoracic segment of the Tortoise with that of the Bird, 157 — and with that of the 
Crocodile, 158. Embryonic condition and development of the Carapace, 159; of the Plas- 
tron, 163. Dermal nature and seat of development of the neural, costal and lateral plates, and 
of certain parts of the Plastron, 164. Summary, 165. Supplement on Professor Rathke’s 
conclusions, 166. 
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