Objective 



Powell 4 in. (1876) 

 Zeiss a* closed . . 



Ross 3 ill 



Powell 2 in. (1840) 

 Powell 1 h apo. . . 

 Powell 2 in. (1876) 

 Powell li (1876) 

 Zeiss a a 26 mm. 

 Zeiss 24 mm. apo. 

 Powell 1 in. (1840) 

 Powell 1 in. (1857) 

 Ross 1 in. (1836) 

 Ross 1 in. (1S40) 

 Zeiss A A 18 mm. 

 Beck ^(1850) .. 

 Powell | (1876) 

 Powell h (1840) 



Zeiss 12 mm. apo. 



Powell } (1876) 



Ross % (1840) . . 



Reicbert 8 mm. . . 



Powell T + B (1876) 



Powell J (1840) 



Leitz P. 7 mm. 



Powell i apo. .. 



Ross $ (1840) . . 



Powell J (1876) 



38-3 4 03 



42 -5 4 • 45 



45 4-70 



54 5 -60 



(JO 6 . 20 



63 6-50 



77-5 7-95 



: 96-7 9-87 



10S 11-0 



110 11-2 



117 11-9 



118 12-0 

 127 12-9 

 145 147 

 145 14-7 

 160 16-2 

 200 20-2 

 205 20-7 

 210 21-2 



lei 

 ° J. 



o + 



s 



is v 



■f ~ 



o o 



I! " 



215 



21-7 



225 22-7 

 310 31-2 

 370 37-2 



390 

 395 

 395 

 460 



39-2 

 39-7 

 39-7 



46-2 



2-481 

 2-247 

 2-128 

 1-786 

 1-613 

 1-538 

 1-258 

 1013 

 ■909 

 893 

 840 

 S33 

 775 

 680 

 680 

 617 

 ■495 

 ■483 

 •472 

 •461 

 •441 

 •321 

 •269 

 •255 

 •252 

 •252 

 •216 



E 



+ 

 + 



So 



II 

 1 



G 



oh 



30 

 15-5 

 47 

 56 

 75 

 65 

 82 

 105 

 130 

 110 

 128 

 120 

 138 

 1G0 

 163 

 179 

 220 

 238 

 244 

 250 

 267 

 367 

 433 

 463 

 483 

 463 

 550 



9-69 



6-08 



11-61 



11-19 



12-80 

 10-93 

 10-97 

 KV95 

 11-85 

 10-15 

 10-87 

 10-23 

 10 76 

 10-82 

 10-99 

 10-90 



6-36 

 2-97 

 S-63 

 8-55 



10-33 

 8-54 

 8-86 

 9-08 



10-09 



47 

 52 

 55 

 66 

 73 

 76 

 93 



w 



K 



Si-e- 



- 36 



- 70 

 -14-5 



- 15 

 + 2-7 

 -14-5 



- 12 



115;- 8-7 



129 



+ 0-8 



8-40 131 - 16 



9-18 139 - 8-0 



8-54 140 - 14 



9-13 151 - 8-6 



9-29 172 - 7 



9-46 172 -5-2 



9-43 190 - 5-8 



29 



+ 3 3 



242 

 248 

 254 

 265 

 364 

 435 

 459 

 464 

 464 

 542 



- 1-6 



- 1-6 



- 1-6 

 4-0-8 

 + 0-8 



- 0-5 

 + 0-9 

 + 4-1 

 -0-2 

 + 1-5 



