and Experiments on Vision . 383 
the retina. This state of vision continued, in its greatest 
extent, to the following day; and it was not till the ninth day 
after the application of the Belladonna, that he completely re- 
covered the power of adapting his eye to near objects. While 
his left eye was thus affected, the vision of the right remained 
unaltered. 
Br. Cutting remarked, while his left eye was returning to 
its natural condition, that the diminution of the pupil, and the 
increase of the range of perfect vision, did not keep regular 
pace with each other ; but that after his pupil had nearly re- 
turned to its- former size, his capacity of adapting the eye to 
different distances was still very limited. As these effects 
therefore are not inseparably connected, they may occur in 
others in a different manner from that which he observed. A 
great degree of dilatation, for example, may take place in the 
pupil, without a total want of the power to adapt the eye to 
different distances. 
Though I could not doubt the accuracy of Dr. Cutting's 
observations, more especially as the altered state of his eye 
had lasted a considerable time, and as he had not been pre- 
vented by other occupations from attending minutely to the 
appearances, which were consequent upon it ; yet, as he was 
the first person who had ever applied Belladonna to his eye 
for the purpose which has been mentioned, and as the results 
had been remarkable, 1 requested him to repeat the experi- 
ment with his other eye. He complied with my desire, and 
found, that the appearances which followed were similar to 
those, which had been produced by the application of Bella- 
donna to his left eye. 
It will, perhaps, be thought extraordinary, that Dr. 
