PROC. AM. PHILOS. SOC. 



VOL. XLIX. NO. 194 



Plate XXII 



West 



Comet 1907 d (Daniel) on August 24. 1907, at 15'' 48™ C.S.T. 



Exposure 0'^ 341". Scale : i inch = 39' 



lo-iiich Bruce Portrait Lens. Ycrkcs Obserz'atory. 



