Document QgML4oaaa3RjM8D3REg5qMV3o

Ipdus trial Hygiene Digest - *jiO August, iqLci of the upper extremity. Preliminary trial of theae Instruments suggests tbs following points: (l) Work tolerance may be estimated with greater accuracy ergographlcally than by Judgment of the examining physician. (2) Xrgography may be clinically useful in evaluation of disability be cause it provides a simple quantitative tool by virtue of which the follow- lug measurements may be made: (a) Initial functional capacity, (b) progress under treatment, (c) the end point of effective rehabilitation and(d) the degree of residual disability. -- J. Ind. Byg. & Toi, 970 Audio 8moke Alarm. 8.L. Kent* "Electronics 22, p.77 (June, 1949)v----------------------------------------------------( 3he paper describee and Illustrates a compact phototube Instrument producing a signal which Increases In pitch and Intensity as the smoke density exceeds a predetermined level. Miscellaneous < Ik i |2r j 979 Crisis In Scientific Research. Editorial. J.A.H.A. l4o, 1220 (Aug. 13. 1949). Concern Is expressed over the fate of Senate bill 1703, providing far laboratory use of the 7,000 to 10,000 unclaimed dogs now destroyed each year In pounds In the District of Columbia. Agltatlcn of antivlvlsectlonlste bas placed the bill In Jeopardy, according to the Rational Society fern Medical Research. Interested persons are urged to write letters of endorsement of the bill to Senator J. Howard McCrath of Rhode Island, and Senator Margaret Chase Smith of Maine. ft? A \ 980 Detroit Recommends New Solvent Mixture Minus Carbon Tet. G,M. Hama. Ind. Hyg. News Letter % 0,11 {Aug. 1949). Carbon tetrachloride has been used for cleaning electric motors vltbout disassembling the unit, because It Is difficult t' find another solvent with the proper combination of properties. However, a new pro duct has been found satisfactory. It contains 25^ methylene chloride, 70 Stoddard solvent, and perchlorethylene by volume. Hie Underwriters Laboratories report states that It Is neutral, that the Inflammability la an a par with that of kerosene, but that the flammability Increases If It 1s allowed to evaporate partially. It is less toxic than carbon tetrachloride but should not be used Indiscriminately without good ven tilation. to 1 A '. Ai. Ai., AC> 1 A; Aj_ Alj All All Aw Ami An Aw AW AW As] At: Aur IF IF IF Be y-'. : 1,'.. i llfCt ^ , --1.7 o \. .; $1 - ; 1; V .,:i wV.