128 
CAPTAIN W. DB W. ABNEY ON THE TOTAL ECLIPSE 
31. Mr. Lawhance is empowered to hand to the American astronomer in charge 
jDositives of any of the pictures taken by the English party which he may requii'e for 
a similar purpose, and to obtain a receipt for them. 
J. Norman Lockyer, 
Feb. 16, 1883. 
W. Spottiswoode, Pres. P.S., 
Feb. 16, 1883. 
Appendix II. 
Adjustments. 
B. Seven-prism spectroscope. 
F line in centre of plate. 
C. Flat grating spectroscope. 
First order—F in centre of plate. 
Second order—F in centre of plate. 
I>. Dense prism. 
F in centre of plate. 
F. Integrating Hilger (Flash). 
G in centre of plate. 
G. Red end slit. 
H. Red end prismatic camera. 
K. First order blue. Rowland. 
F in centre of plate. 
L. Second order blue. Rowland. 
H in centr’e of plate. 
M. 4" photoheliograph. 
See that sun runs along horizontal wire. 
N. Small photoheliograph. 
J. Norman Lockyer, 
Feb. 16, 1883. 
