INDEX 
TO THE 
PHILOSOPHICAL TRANSACTIONS 
FOR THE YEAR 1827. 
A 
Acid , acetic , or vinegar , composition of, p. 383. 
citric composition of, p. 385. 
malic , composition of, p. 386. 
oxalic , composition of, p. 385. 
saclactic, composition of, p. 387. 
Airy, G. B. Esq. Remarks on a correction of the solar tables re- 
quired by Mr. South’s observations, p. 65. 
Amylaceous principles, remarks on, p. 374. 
Arrow root , composition of, p. 377. 
Atmospherical Refractions at Port Bowen , corrections to the reduc- 
tions of Lieut. H. Foster’s observations on, p. 122. 
B 
Barlow, Peter, Esq. his rules and principles for determining the 
dispersive ratio of glass ; and for computing the radii of curva- 
ture for achromatic object-glasses, submitted to the test of 
experiment, p. 231. 
— on the secondary deflections produced in a 
magnetized needle by an iron shell, in consequence of an unequal 
distribution of magnetism in its two branches, p. 276. 
Bell, Thomas, Esq. on the structure and use of the submaxillary 
odoriferous gland in the genus crocodilus, p. 132. 
MDCCCXXVII. 
