Iii a reversed return system, the water returns to the heater by an indirect route after it has passed through the radiators, so that the paths leading through the three radiators shown in Fig. 2 are practi cally of equal length.

Dear Sirs, Since sending to you with our letter of November 24th copy 6f Manila/ Hong Kong letter No.1409 of November 20th, the subject therein has been further discussed here in view' of the possible danger to our own staff being exposed to the dangers of lead poisoning and we feel very definately that steps should be taken to correct the situation to the extent that more frequent medical examinations be instituted.

Lead Refinery Sut Chloago, lad.

HEATING & AIR CONDITION ING CONTRACTOR (formerly Sheet Metal Worker) is the leading magazine in the warm air heating, packaged air conditioning, ventilation, and sheet metal contracting industry.

KEPNER Chairman, Chemical Section, Statistics Committee While it is very difficult to find something new jjIamu accident statistics, it is a topic i.if vital iinjKtrtancc and never-ending interest to those of us who lielievc com plete, permanent and reliable records and statistics arc a necessity in the conduct of present day successful accident prevention work--which, more and more, is leading us into fields of science, experiment and research--all of which is eminently worth while, tor it is by just such development and progress that many organizations in the Chemical Industry have not only made new accident records, but reduced acci dents to almost tlic vanishing point.

CouiNL National Lead Co.

An Indirect Return System an indirect route after it has passed through the radiators so that the paths leading through the three radiators shown in Fig. 2 are practi cally of equal length.

Hellmut Haubold, an influential Berlin cancer statistician and SS officer, proclaimed that cancer was actually Germany's leading cause of death, surpassing even the major forms of heart disease.20 Rudolf Ramm in 1942 estimated an annual cancer death toll of 150,000 to 160,000 Germans,* not to mention the half a mil lion people sick with the disease at any given time.21 Worries about the growing cancer mortality and the imperfec tions of diagnosis led a number of local cancer associations--in col laboration with the Nazi party's Office of Public Health--to imple ment mass screening programs.

Install proper filters adjacent to the grilles in each room, using splitters if the duct leads to the rooms are short. 9 # Space limitations and maximum air velocities for the introduction of air to a broadcasting studio restrict the size of duct to 30-by 16 in. and in addition the length of branch duct which is suitable for lining with, sound absorption material is limited to 22 ft.

1939 Minutes of Monthly Meeting of the BOARD OF DIRECTORS of NATIONAL LEAD COMPANY held at No.

Principal manu facturers of heating and air. conditioning equipment receive issues as advertisers or subscribers; leading jobbers also subscribe.

.; 7% Preferred........................................................ 6.000 National Lead Co.; 7% Preferred, Class A.... ..................................... 50.00 100.00 100.00 3,540 Otis Elevitor Co.; 6% Prefared............................................................. -10,000 Procter A Gamble Co.; 5% Preferred (Option-115 on or before 100.00 February 1,1939, after at 110)......................................... .............. 100.00 3,392 Realty A Security Co.

The ducts leading to supply registers which are located on the exposed walls should be adequately insulated to reduce the heat loss from the ducts.

A number of new membership "leads" were developed.

New policy statement calls for (1) standby pro duction lines without actual volume production of anything easy to make when needed (2) expanded capacity for some items thot ore hard to produce and require long lead time.