Fio. 2^2c.— Types of birds' feet. A, reticulate tarsus of black-bellied plover; B, 

 Hcuteliate tarsus of meadow-lark; C, booted tarsus of robin; D, cursorial foot 

 of ostrich; E, rasorlal foot of prairin-chicken; F, semi -palm ated foot of peep; 

 Q^ totipalmate foQt of wood-duck; H, of cormorant, (To face page 201.) 



