PROC. AM. PHILOS. SOC. 



VOL. XLVI. NO. 



187 



Plate IV 



N 



Nebulous Region of Gamma Cygni 

 1905 August 28 



N 



Nebulous Region of Rho Ophiuchi 

 1905 April 5 



Photographed with the Brue telescope 

 Yerkes Observatory 



E. E. Barnard 



