Construction of an economical semi-automatic sample stirrer and thermometer tapper for the cryoscope is described in detail. These accessories save time and permit closer duplication of results on freezing point of milk.
Mr. W. L. Green received the A.B. degree from the University of Kansas in 1936. He has served as medical technologist with the Detroit Department of Health; as chemist for the Detroit Water Board sewage treatment plant; and as milk sanitarian and milk laboratory supervisor for the Lawrence-Douglas County Health Department, Lawrence, Kansas. At present he is acting chief of the Dairy Products Section, Bureau of Laboratories, Indiana State Board of Health.