126 



IOWA ACADEMY OF SCIENCE Vol. XXVI, 1919 



PLATE of ANIMAL and BIBD TRACKS. ^ 



Direction :d > 



1st line moving slowly; 2nd, speeding, 

 Cotton-tail Rabbit. 1 ft., \ 



* pox Sq.uirrel. 1 ft.^ 



.^Fig. 1 



4- 





^. 





/' 



i'f ^ 

 •ft 



Jii 



V 



"^Fig.. 2, 





White- footed Deer Mouse, 1 in.'t ' 





Domestic Cat, 1 ft>i « 



o # • • • • • • 



9 « • • • 



'y'* 



s. Fiff. 3. 

 Fig. 4. 



Short-tailed Shrew 6 in.^ 



Fig. 5. 



Muskrat. 6 in.«- 



Common House Rat. 6 in.»- 



Common Skunk. 1 ft.« 



Chicken, Duck, Crow, Sparrow, Robin. ^ 



V ^ ^ -* ^-^ -fe 



Figs. 9, 10, 11, 12, 13. 



FIGURE 28 



