No. 10. I'.aik showins: pustulps of a dark color or of a brownish tint, due to lonujer 

 exposure to weather. — Phofof/raph hi/ Prof. Collinx. 



Xo. 111. I»isi>asiMl (.iK'sMuit itw si 1 will- s!irfdih>'| link atirr iw. i r tli''' y<'ars in- 

 fection. — l'hoto(jrai>h hy Prof. Collins. 



^ iPw % 



