A Comparison of the Records of the Two Anemometers at the University of Kansas

F. H. Snow
1887 Transactions of the Annual Meetings of the Kansas Academy of Science  
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more » ... ntent at http://about.jstor.org/participate--jstor/individuals/early-journal--content. JSTOR is a digital library of academic journals, books, and primary source objects. JSTOR helps people discover, use, and build upon a wide range of content through a powerful research and teaching platform, and preserves this content for future generations. JSTOR is part of ITHAKA, a not--for--profit organization that also includes Ithaka S+R and Portico. For more information about JSTOR, please contact support@jstor.org. TWENTY-FIR ST ANNUAL MEETING. TWENTY-FIR ST ANNUAL MEETING. 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 mistakes, 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 judgment, he was given a further trial, even though no mistakes were made. If the person 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-although a few such cases have been met with. The results are given by classes, as that seemed the 4nost natural classification that could be made. The class of '88 contained 26 members, two of whom were incompletely colorblind. 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-redblind-and three were incompletely color-blind, all confusing blue with the green. SUMMARY. 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-.
doi:10.2307/3623678 fatcat:bdbszpj46zc4nmtiumbb6ewxfy