42 Messrs. C. W. Waidner and F. Mallory on 



Fig. 6. 





























H 



















/ x 















1 











1 

 ^ 



^ 



/ Uldl. 



?h'Si>2 



~ H ^N\f c 



» ^2?a/y ^^ 



hiiov r <h?^\ 



^ 



> 





^h 



4* 



