351 



Table 1. 



List of plates. 



no. 



date 



centre of field 



sidereal time 



efPiciency 



_ a 



O <u 



;tion of 

 the 



iiith 



o-d -,5 



of 



a 



d 



of exposure 



bcr 

 sure 

 ctiv 



long 







(1900) 



(1900) 





of plate 



ü o 





pg£ t- 



plates 







3 C 1> i 







3h 





middle 



duration 





2 





^ c w 





1912 



m 



O f 



h m 



s 



111 



m 



m 





53 



Aug. 10 



41-9 



+ 23 50 



1 26 



1800 



8-9 



+ •1 



— 02 



306 



54 



— — 



42-0 



23 50 



1 51 



57, 18, 6, 2 



6-3,4-9,3-8,2-8 



+ •5 



2 



169 



78 



— 12 



40-2 



24 6 



1 26 



1800 



9-1 



+ ■3 



2 



241 



79 



— — 



40-2 



24 6 



1 50 



570 



8-2 



+ ■4 



2 



155 



97 



Sept. 8 



42-6 



24 4 



1 29 



1800 



94 



+ •3 



2 



218 



98 



— — 



42-6 



24 4 



1 53 



570 



8-0 



+ •2 



2 



134 



99 



— — 



42-6 



24 5 



2 6 



180 



6-9 



+ •1 



1 



80 



100 



— — 



42-6 



24 5 



2 13? 



57, 18, 6, 2 



6-l,4-9,4-0,2-9 



+ ■3 



1 



112 



101 



— — 



42-6 



23 36 



2 31 



1800 



91 



+ •3 







258 



102 



— — 



42-6 



23 36 



2 54 



570 



8-3 



+ •5 







180 



103 



— — 



42-6 



23 35 



3 9 



180 



7-1 



+ •3 







101 



104 



— — 



42-6 



23 36 



3 15 



57, 18,6,2 



5-9,4-9,40,3-0 



+ ■1 







143 



105 ' 



— — 



41-4 



23 20 



3 43 



1800 



9-1 



+ •3 







256 



106 



— — 



41-3 



23 20 



4 7 



57,18,6,2 



5-5,4-6,3-6,2-0 



— 3 







109 



116 



— 9 



41-4 



23 50 



52 



570 



8-2 



+ •4 



4 



145 



117 



— — 



41-4 



23 50 



1 2 



180 



6-8 



■0 



3 



100 



118 



— — 



41-5 



24 20 



1 11 



180 



7-1 



+ ■3 



2 



82 



119 



— — 



41-5 



24 21 



1 17 



57, 18, 6, 2 



5-8,4-5,3-9.3-0 



•0 



2 



98 



120 



— — 



41-6 



24 21 



1 27 



570 



7-8 



•0 



2 



124 



121 



— — 



41-5 



24 21 



1 50 



1800 



90 



+ •2 



2 



242 



122 



— — 



39-9 



23 35 



2 14 



57, 18, 6, 2 



5-8,4-9,4'l,2-8 



■0 



1 



141 



123 



— — 



39-8 



23 36 



2 21 



180 



6-9 



+ •1 



1 



71 



124 



— — 



39-8 



23 36 



2 30 



570 



8-0 



+ •2 







130 



125 



— — 



39-8 



23 35 



2 53 



1800 



8-9 



+ •1 







229 



126 



— — 



39-9 



24 5 



3 19 



570 



7-6 



— 2 







140 



127 



— — . 



39-8 



24 5 



3 41 



1800 



8-8 



•0 







244 



128 



— — 



39-9 



24 5 



3 59 



180 



7-2 



+ •4 







111 



129 



— — 



39-9 



24 6 



4 4 



57, 18, 6, 2 



6-0,49,3-8,2-8 



+ •2 







184 



144 



— 11 



44-9 



23 49 



14 



1800 



8-6 



— 2 



6 



205 



146 



— — 



43-3 



24 29 



1 31 



1800 



8-9 



+ ■1 



2 



247 



147 



— — 



43-3 



23 12 



2 7 



1800 



8-3 



— 5 



1 



146 



162 



— 12 



41-7 



23 51 



1 24 



1800 



8-7 



— 1 



2 



262 



163 



— — 



41-8 



23 50 



1 48 



570 



74 



— 4 



2 



153 



164 



— — 



41-8 



23 50 



1 57 



57, 18, 6, 18, 2? 



5-9,4-9,3-8,4-7,2-8 



+ •1 



2 



205 



165 



— — 



41-7 



23 50 



2 6 



180 



6-8 



■0 



1 



98 



166 



— — 



41-7 



24 21 



2 27 



1800 



8-8 



■0 



1 



177 



167 



— — 



41-7 



24 20 



2 49 



570 



7-7 



— 1 







97 



168 



— — 



41-7 



24 21 



2 59 



180 



6-6 



— 2 







58 



169 



— -^ 



41-7 



24 21 



3 4 



57, 18, 6, 2 



5-7,4-4,3-5,2-5 



— 1 







78 



170 



— — 



41-9 



23 20 



3 24 



1800 



8-7 



— 1 







198 



171 



— — 



41-8 



23 21 



3 48 



570 



7-7 



— 1 







112 



172 



— — 



41-8 



23 20 



3 58 



180 



6-7 



— 1 







64 



173 



— — 



41 '8 



23 21 



4 4 



57, 18, 6, 2 



5-8,4-8,3-5,2-8 



■0 







108 



174 



— — 



40-3 



24 6 



4 12 



180 



6-7 



— 1 







74 



175 



— — 



40-3 



24 6 



4 17 



57,18,6,2 



5-6,4-5,3-8,2-2 



2 







146 



215 



Oct. 12 



40-0 



23 36 



2 19 



180 



6-5 



— 3 



1 



58 



216 



— — 



40-0 



23 36 



2 28 



570 



7'7 



— 1 







92 



217 



— — 



40-0 



23 36 



3 4 



1800 



8-5 



—3 







166 



218 



— — 



40-1 



23 36 



3 24 



57, 18, 6, 2 



5-6.4-6,3-6.2-2 



— 2 







128 



219 



— — 



43-2 



23 36 



3 40 



570 



8-3 



— 5 







153 



220 



— — 



43-2 



23 35 



3 49 



180 



6-8 



•0 







73 



