South. 



W.- 



East. 



PHOTOGRAPH OF THE MOON. 

 Taken by MM. Pin aud Prospeb Heset with their 13-incli refractor, at the Paris Obseryatory. The sensitive 

 plate was placed behind an eye-piece which enlarged the image in the principal focns 15 diameters. Age of 

 the Moon 167 hours. Taken March 27th, 1890. 



T}i€ Auiomatic Engiarijig Cftin)^fi'ny, Sti'oWc Jl^mi, WiVcsdeit Green. 



