A PRAIRIE-"DOG" BURROW 



207 



! B._ 



i&g 



y#f 





•".•.■/;-;*.■ «,",' 





G? 



&&m> 





A. Mound/ 



B. Funitel -slvajied entrancoto burrow 



C. Main/nassaq(,4-''z inckin/dtameter 

 ^ about 15 Rein i length- ' 



D . Korizonta i jtasscia-fy 'Gfeitui length. 



E. ttnusedneslsfdUdwM earlhs.refuse. 



F. Unused narl ofltoraontaljiassaac 

 fvtltdnitlv eart/i etc ( 4- fat long) 



G.Mckelarac ctio-uqfafor ontprainz dag- 



H . NcS tofqraSS(ll w ich m ducm ehrby9uv- 



chcs in, height) 

 J. Absorbent mailer carrying bual/ihide 



of carbon. A ' 



K./towfre/? offl-aircedoqs as found after 



use ofouul/t/ude ofxarooiv 

 Lje/d/c of horizontal passcujt. Infect 



2 'incites 



■i|V.k^v&" ! -«sfiS8 



■ ■-. •. ' . ' ■. ' .■ ■..- ' •- ' •,■ ' ■- ^.t.-.vl- ' ■■.- ' v: • 















PRAIRIE-" DOG" BURROW. 

 From Dr. C. Hart Merriam, "Yearbook," Department of Agriculture, for 1901. 



