PROC. AM. PHILOS. SOC. 



Plate XI 

 West 



VOL. XLIX. NO. 194 



Comet 1907 d (Daniel) on August 10, 1907, at 14^^ 57™ C.S.T. 



Exposure i'^ 43™. Scale : i inch = 42' 



lO-inch Bntcc Portrait Lens. Ycrkcs Observatory. 



