PROC. AM. PHILOS. SOC. 



VOL. XLVI. NO. Mi Ls7 



Plate V 



N 



Giacobinis Comet 

 1905 December 29 



Giacobinis Comet 

 1906 Januarys 



Photographed with the Brue telescope 

 Yerkes Observatory 



E. E. Barnard 



