INDEX. 
W 
Wheat Starch , composition of, p. 376. 
Woodhouse, Robert, A. M. on the derangements of certain 
transit instruments by the effects of temperature, p. 144. 
Y 
Yarrell, William, Esq. on the change in the plumage of some 
hen-pheasants, p. 268. 
ERRATA, Part IV. 1826. 
Page 4, line 1, for “ 9 ten-thousandths,” read “ 9 thousandths.” 
In Plate VI. page 189, insert the letter ** N” at the left hand extremity of the 
horizontal diameter in Fig. 4; and at the upper extremity of the vertical 
diameter in Fig. 5, insert the letter ,c e.” 
Directions to the Binder. 
Plates I. II. and III. should face page 124, instead of 174. 
From the Press of 
W. NICOL, 
Cleveland-row, St, James’s. 
