118 W. & L. E. GURLEY, TROY, NEW YORK 



iiiiiiiiiiiiiiiiiiiifiiiiiiitiitiiiiiiiiiiiiiitiifiiiiui 

 ii ii i m m i mi i n mt nun minimum m 1 1 ii i m ii 

 mil imii imii HUM nun mill linn mill iiiiiimi 

 mil mill unii linn HUM iniii iiini linn iiiiiinii 



iiiiiiiiiiiiiiiiiini 

 iiiiiiiiiniiiiiiiiii 

 iiiiiiiiiinillllilll 

 llliiiiiiiiiiiiiiiin 



mil imii imii imii iniiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii in 

 mil it mi Him mill mm mm mm Him mm mill mi n in 

 iiiiiiiini imii imii imii iiini iiiiiiiiiiiiiiiiiiiiiiiiiiiiiini 

 iiiimiiii imii mill imii imii imii imii imii muni ii ii m 

 mil mm urn i mm m imiiimmmiimimmmimii 



m mm ......... mimimmimmimiimmmmiimimmmm ..... immiii 



m mm mill mm IIIIIIIIIIM Him mill linn HUM linn IIMIMIIIIIIIIIII m 



in mill unit mill imii IIIIH unit imii imii unit linn linn imii unii imii in 

 in mill unit nun tiiiiiiiiiM iinii mill imii iiini mill nun imii iiiiiniiiii m 



m mm mm mm m 

 ii mill iiiiiiiiini in 

 ni imii iiiiiiiimi nt 

 m mm Him i ii mil i 

 mmiiiiimimiiiiii 



ni siiwt I-T No, ';.-.i <;ra|.!ii- Register. 



Normal range, to 1 foot Natural S<-al-. Tinu- Srali-. 7 <l.i.\-. 

 See pn?e 112. 



