COMPARISON OF BIRD, TURTLE, AND SNAKE. t>3 



COMPARISONS. 



With two columns, one for bird, the other for turtle and 

 snake, answer the following questions: 



(1) Is the blood warm or cold ? 



(2) Are feathers present ? 



(3) Are there any wings ? 



(4) Is there an elongate true tail ? 



(5) Are the carpus and tarsus long or short ? 



(6) Are air-sacs present ? 



(7) How many aortic arches ? 



(8) How many ovaries ? 



