PROC. AM. PHILOS. SOC. 



VOL. XLIX. NO. 194 



Plate IV 

 West 



Comet 1907 d (Daniel) on July 19, 1907, at 13'' 54™ C.S.T. 



Exposure 2'' 18'". Scale: i inch = 49' 



lo-inch Bruce Portrait Lens. Ycrkcs Observatory. 



