(523) 
Aqueous Vapour, quantity of in the atmosphere at dif- 
ferent altitudes, determined by observations, page 104, 
et seq. 
Arms, of Grelley, 490—of Manchester, 474. 
B 
Barrineton, Honourable Daines, remarks on his ex- 
periments and inferences on singing birds, 295, 296, 
306. 
Birds, on the notes of, 289—their calls and songs innate, 
310, et seq. 
» periodical, observations on, 125-—tables of 
species that visit the neighbourhood of Manchester, 
with the times of their appearance and disappearance, 
129, et seq. 
——— 
, singing, table of species observed in the neigh- 
bourhood of Manchester, with the periods at which 
they commence and discontinue their songs, 319— 
table shewing the comparative merits of the songs of 
British species, 321. 
Biackwa LL, Mr. John, on periodical birds, 125—on the 
notes of birds, 289-—observations on the cuckoo, 441. 
