11 
BULLETIN 36. PUERTO RICO EXPEBIMENT STATION 
sulphate, discarding those thai have turned white. Porcelain or 
enamel-ware receptacles should be used in preparing and handling 
the solution, ;»- it will corrode metals. If a large Dumber of animals 
1 
1 
l$H 
H 
mfin 
3 
mtfmr 
Figure 3. -Worm parasites of Puerto Rican cattle: .i. Stomach worms; B, nodular 
worms; r, hookworms; U, lungworms; /.'. whipworms; I', laryngeal worms; O, tape 
worm; //, liver Bakes; /. Btomach flakes. All Datura] siz.-. 
are to be treated the device described by Hall -' may be used. For 
stockmen that have a comparatively small number of animals, but 
'-'llu.r M C. PABA8ITE8 AND PABA81TIC DI8BA8E8 OF SHEEP. U.S. Dept. Agr. Farmers' 
:ul. 1330, 6 » pp., lllus 192a. 
