248 BRITISH BIRDS. " [vol. vm. 



and its trueness to type, the share of the sexes in the care 

 of the young, the methods adopted for the feeding of the 

 young and the sanitation of the nest are other subjects 

 reviewed. Finally we have an interesting discussion on 

 vocal powers — whether song is a matter of tradition or 

 congenital endowment, and the meaning of imitative powers 

 and variations in diJfferent districts. 



It should be mentioned that an excellent index to the 

 whole work also appears in this final part. It only remains 

 for us to congratulate Mr. Howard on bringing to a 

 successful conclusion a work which will always bear 

 testimony to the great powers of observation, persistent 

 effort and originality of its author. H.F.W. 



