772 KECORD OF CURRENT RESEARCHES RELATING TO 



mirror or a small bull's-eye, and thus obtain for this particular pur- 

 pose equally good effects, with less expenditure of time in making the 

 adjustments." 



Fig. 6. 



Improvements in Microphotography.* — Dr. E. Cutler describes 

 the apparatus he adopted for photographing with Tolles' J^^ objective, 

 the special features in which the apparatus differs from Colonel 

 Woodward's plan (besides portability) being (1) in the size of the 



* 'Am. Journ. Sci. and Arts,' xviii. (1879) p. 93. , 



