9 Medicine--Continued symposium on dynamics of: presentation of un identified occupational case history [Hasterllk], *147 symposium on how needs of American workers can be met: viewpoint of personnel administrator [Hall], *173 union: viewpoint [Read], *188 Mental Diseases : See also Psychiatry vocational rehabilitation of psychiatric patients, 215 Mental Hygiene in industry: results and possibilities, 323 Mercury content of air: method for determining, 432 ferric chloride: decontamination and removal of spilled by, 435 in organs of rabbits poisoned subacutely with vapor, distribution, 329 phenyl compounds: hygienic problems in industrial use'of, 331 protective clothing for working with, and its cleaning from latter, 539 toxicity of vapors of organic compounds of (ethyl mercuric phosphate and chloride) in acute and chronic intoxications, 421 Metabolism beryllium poisoning: chronic, study of case treated with ACTH [Hardy & others], *579 worker's basal: contribution to investigations, 412 Metals heavy: BAL in poisoning, 424 carbonyls: carbon monoxide poisoning, danger in conversion of hydrocarbons and manufacture of, 335 Metal Workers fatigue and heat: effects on, 207 Metallurgic Industries silicosis in: in France, 210 Meteorology factors affecting air pollution surveys [Elsenbud & Harris], *90 micro-climatic factors in smoke pollution from tall stacks. 111 micrometeorological variables: forecasting of. 111 Methionine histopathologic modifications In experimental intox ication due to trinitrotoluene, following therapy with lipocaic (pancreatic hormone) and: be havior of kidneys, adrenals, spleen, lungs and heart, 330 Methyl Bromide poisoning: fatal case due to Inhalation of, 415 Methyl Chloride intoxication; due to refrigerator gas, epidemi ological study, 330 Methyl Iodide toxicity of: preliminary study, 421 Methylpolyslloxane toxicity: chronic, in dogs [Child & others], *479 Micro-organisms triethylene glycol vapor: rate of bactericidal ac tion on, dispersed Into air in small droplets, 435 Milk DDT: occurrence In human fat and [Laug & others], *245 Mines and Miners accidents: detailed classification of, 539 diseases: anthracosilicosls, roentgenologic aspects of, 102 diseases: manganism in French Morocco, 103 diseases: pneumoconiosis, classification of radiographic appearance in, 523 diseases: saturnism In lead miners: survey in Marrakech region, 107 diseases: silicosis, acute, from rock excavation, 105 diseases: silicosis In metal mines of Japan, re port on country-wide study [Yamamoto], *339 Mines and Miners--Continued diseases: silicotic pneumonoconloses treatment, 103 dust-allaying: review of practices at working faces in some bituminous coal and lignite mines, dust in Belgian coal: campaign against, 436 explosives, new safety: for dusty or fiery coal mines, 435 injuries: of semilunar cartilages, review of 200 cases, with special reference to postoperative dis ability time, 334 instruments: Bruck-Vigliani method for aspira tion of drilling dust in experiments, 336 instruments: dust respirators, use in coal mines, 336 instruments: water-spray drills, new studies at Amercoeur coal mines, Hasselt, Belgium, 1950, 221 . locomotive haulage, observations on effect on en vironmental conditions, 335 locomotive traction material: physiological re sponse to dust from, 524 safety achievements: research and problems yet to be solved, 336 safety: research.

ELECTRIC HEATING UNITS In general, an electric heating unit is considered to be a structure con taining one or more heating elements, electric terminal connections or leads, electrical insulation, and a frame, casing or other supporting means, all assembled together into a unit.

Provision must be made to prevent freezing of the water in the tank as well as in the pipe leading to the tank. - In accordance with Paragraph H-92 of the A .S.MJS.

This leads to a further sound attenuation.

Be , CLOTH CLOTH ' , grade herringbone Underwiters Underwiters M No. 24H120 Underwriters cloth is designed to provide protection and case of action to cm- ployees in hazardous industries Its weight of only 120 pounds per square yard relieves the wearer of the cumber some burden usually associated with asbestos safety clothing The famous M SRC finish provides additional resistance to frictional wear Leading manufacturers of asbestos safety garments feature M No 24H120 herringbone cloth This is a typical and exclusive product of M research MANHATTAN INC .

Th is r ad iolead w ill th en behave e xact ly as st ab le lead does in th e body.

Today, after nearly three decades of continuous development, ALFOL still is in the lead.

=0 -n Or- Is or >o m FOR USE WITH 6 LEAD WYE-DELTA MOTORS Maximum .

Finally, a morphological study does not give any lead as regards functional damage. -- Cond. from Bull.

Seles * i.gl*r i; " 'M -:3: dwell iarlss. legearefe September 20* 1951 - Lithegeae ** law Titenim Type Fijpasat 3ia answering your letter #f September I8tk yesterday* I her* r fired fron'ttr* Rohr 8etio.ial Lead's Tsehnieal terries Report on Laten Paint*.

In considering refrigeration power consumption, it should be noted that the use of weather records for a specific year may lead to large inaccuracies in estimating operating costs, since there may be wide variations from year to year, and therefore, average yearly weather records should be used rather than those for any individual year.

Lack of proper evaluation, or improper installation may lead to unsatisfactory results. _ . 1'iua UJT'V/ViiuaEi'ia if auu Tib Rods and Insulation Computed Heat Transmission Coefficients Computed overall heat transmission coefficients of many common types of building construction are given in Tables 6 to 20, inclusive, each coeffi cient being identified by a serial number, except in Tables 19 and 20: For example, the coefficient U of a brick veneer, frame wall with wood sheath ing and 2-in. of plaster on gypsum lath is 0.27 (Wall No. 28-C in Table 6) and with 2 inches of blanket or bat insulation, the coefficient would be 0:097 (No. 49-B in Table 7).

The theory covering water vapor transmission through materials leads to the following formula, W = MAT Ap (7) where, W = .total weight 'of vapor transmitted through, the specimen, grains.

In considering refrigeration power consumption, it should be noted that the use of weather records for a specific year may lead to large inaccuracies in estimating operating costs, since there may be wide variations from year to year, and therefore, average yearly weather records should be used rather than those for any individual year.

While the L.I.A* has a very liberal policy toward publishing of research results, we feel that it is our prerogative to have such information released in areas where if can be of the greatest benefit to the lead industry.