BROOKS' COMET. Enlarged from a Photograph by Prof. E. E. Barnard, 



Taken October 21st, 1893; exposure 161). 37m. to 17b. 12m., Standard raeifie Time. The arrow from the 

 nucleus shows the direction of motion of tlie Comet, and the distance passed over in the succeeding 

 twentv-four hours. 



