118 



PROCEEDINGS OF THE AMERICAN ACADEMY. 



/ 



e 



€ 



^\ c 

 \ 



J^ 





^ 



. rm 



"TQ] — i 



igr 



3 



3 



mi_ 



im — . cm 



rm 



qj^^kCo" 



H 



LUI 



JIIL 



H 



ITL 



W 



M-. 



-Sf^ 



j-fe'C^ ^ 



B 



Figure 1. General Arrangement of the Rotating Apparatus, i size. 



