NOTE. 



The formula for Htematin given in 351, p. 568, is the old one of 

 Hoppe-Seyler ; that given in 447, p. 744, is the more recent and 

 probably more correct one of Nencki and Sieber. 



It was not observed until too late that in the diagram of the nerves 

 of the alimentary canal in the dog 276, p. 466, tivelve dorsal nerves 

 had been represented. The figure, as stated, makes no pretence to 

 anatomical exactness ; but it would have been better to represent either 

 thirteen or fifteen (see 412) dorsal nerves. 



EEBATA. 



p. 430, 1. 9, for 237 read 238. 



p. 434, 1. 23, 232 233. 



p. 462, 1. 3, from bottom 266 265. 



