1889-90.] FIFTEENTH MEETING. 25 



whose colored pictures were celebrated all the world over. That the 

 whole system becomes weakened by the use of tobacco and liquor, no 

 one could deny, but it could not be proved that it was the cause of 

 color-blindness or affected the sense of color. 



Mr. Jones thought that it was carrying the thing too far to apply it to 

 dress. He asked why Mr. Sherwood had not the courage of his convic- 

 tions and come in the colored costume he advocated. He agreed with 

 Mr. Sherwood that there was too much white in the interior of houses. 



Mr. Clark wished to call attention to the investigation Dr. Ryerson 

 had made last year as to the prevalence of color-blindness in the Public 

 Schools. The report stated that from five to six per cent, of the pupils 

 were color-blind. He was struck with the fact that so few of the girls 

 were color-blind. 



Mr. Sherwood thought that it was owing to the fact that girls were 

 more accustomed to pay attention to colors. 



The President enquired whether in Toronto there were more girls or 

 boys that wore glasses. 



Mr. Clark said that so far as his observations went the numbers were 

 about equal. 



Mr. Bengough stated that it was not long since a commission had been 

 appointed to investigate the prevalence of color-blindness among the 

 seamen employed on the lakes. One of the members of the commission 

 told him he was surprised at the number of captains and mates of vessels 

 that were color-blind. The men were astounded to find that so many 

 had to be set aside for that defect. 



SIXTEENTH MEETING. 



Sixteenth Meeting, ist March, 1890, the President in the chair. 



Donations and Exchanges since last meeting, 62. 



Dr. P. H. Bryce read a paper on " Some Points in the Natural History 

 of Drinking Waters." 



Mr. J. J. Mackenzie, B.A., exhibited some cultures of bacteria from 

 city water. 



