TWENTY-FIBST ANNUAL MEETING. 107 



which resembled this in color — different shades of it — lighter and darker than the 

 one to be selected to. Care was taken by the operator not to call the name of the 

 color. The student was not asked to select different shades of green, but to select 

 yarns with a shade of "that color."' The reason for this is plain. It is true that 

 one-half the color-blind students had another name for the color than green, and 

 they might be needlessly alarmed if they were to discover their catalogue of colors 

 differed from that of the operator. If the person being tested selected as many as 

 a dozen different shades from the colors of confusion, with no hesitation and no mis- 

 takes, he was dismissed and regarded as normal in color-sight. If, however, there 

 was an evident uncertainty, a hesitation, an apparent lack of confidence in his judg- 

 ment, he was given a further trial, even though no mistakes were made. If the per- 

 son tested selected one or more colors to match the green with no shade of green in 

 them, a further test was given on other colors. This further test is for the purpose 

 of determining on what particular colors the eyesight is deficient, for it is seldom 

 that color-blindness extends so far as to render the subject totally color-blind — al- 

 though a few such cases have been met with. 



The results are given by classes, as that seemed the most natural classification that 

 could be made. 



The class of '88 contained 26 members, two of whom were incompletely color- 

 blind. They both confused the brown yarns with the green. I give the colors one 

 selected to match the green: Green 16, brown 7, orange 1. 



The class of '89 contained 47 members, all of normal sight. 



The class of '90 contained 78 members, two of whom were completely color-blind. 

 One of them selected green 3, red 6, pink 3 to match the green; the other, green 8, 

 red 3, brown 2. 



One of these, the first one, called the green and red and pink, shades of green. 

 He was red-blind; knew no such color as red. The other called them red. He was 

 green-blind. 



The class of '91 contained 185 members. Four were completely color-blind, and 

 four incompletely color-blind. Of the completely color-blind, two were red- and two 

 were green-blind. Two were brothers, one red- and one green-blind. A sister and 

 several cousins were all normal. Of the incompletely color-blind, three confused 

 blue and green and one brown and green. 



The class of '92 contained 208 members. One was completely color-blind — red- 

 blind — and three were incompletely color-blind, all confusing blue with the green. 



SUMMABlf. 



Total number examined, 544. 



Total number completely color- blind, 7. 



Total number incompletely color-blind, 9. 



Per cent, deficient, 3 — . 



Per cent, completely color-blind, 1.3 — . 



A COMPARISON OF THE RECORDS OF THE TWO ANEMOMETERS AT 

 THE UNIVERSITY OF KANSAS. 



BY PROF. F. H. SNOW, OF THE UNIVERSITY. 



Until the erection of an anemometer by Professor Lovewell at Washburn College, 

 the only anemometers in the State of Kansas were those at the State University, 

 at Lawrence, and at the Signal-Service station, in the city of Leavenworth. The 



