I Thanks, reader BUieU, for your leads on this early work w/fb critical pressure steam.

A study of the X-ray piotare of the m a fail to real ay silicosis at the preeent tin, but to prodac a decidedly sore fibrosi* than normal condition in the mines ia th Picher field, the reap s h o w an average wurMng time of i* yestrs; ia ther word, apparently the sen hare contracted the ~ne aaonat of fibroeia in 12 nonth* or le that occura in the mines of the Picher field in approximately air years, lasuming this to he correct, the evidence, bile not comp te, would lead to the conclusion that the duet encountered by the man i* more dangerous and will produce lung InYOlTeacnt in a very mnch shorter period of time than the dust which is encountered ia the Picher mines.

ESATIOH FCR OCCITPATICBAL SISSA3BS Certain named diseases such as mercury poisoning* lead poisoning, etc* cos* under the Compensation Act of He* Jersey* However, silicosis and asbeatosis are not named and aay claims arising out of these diseases might he under common law* IN2P3AKCS I-ROTSCTlOH to r diseases listed under the Compensation Act, we have unlimited insu rance protection* Cur insurance for occupational disease ol&ims which might be made under common law is plaoed with the Continental casualty Company for the primary coverage of 5*000 for one person or aggregate claims of $15,000 in one year* Our excess ooverage of 45,000 for one person and 165,000 aggregate for one year la insured with Lloyds* If claims are filed both of the companies may canoel the occupational dis ease coverage* FOR COI.'

American Society of Heating and Ventilating Engineers Guide, 1936 Gas-fired appliances (continued), installation, 506 rate of gas consumption, 505, 517 ratings of. 505 types of space heaters, 503 used with unit heaters, 227 warm air furnaces, 502 Gaskets, 620 Glass, heat transmitted through, 125, 164 solar radiation through, 163 window, area, 104 Glossary of terms, 771 Grates, 776 areas of, 400, 411, 424, 442, 776 of furnaces, 400, 411. 424, 442 of stokers, 485 Gravity, convectors, 521 heat emission of, 521 gravity-indirect heating systems, 530 specific, 2 steam heating systems, 533 one-pipe air-vent, 533, 536, 565. 577 two-pipe air-vent, 537, 566, 577 warm air heating systems, design of, 417 Greenhouses, temperatures for, 721 Grille, grilles, 776 (see also Registers) anemometer readings through, 765 for concealed heaters, 528 of roof ventilators, 92 for warm air systems, 409, 421 H Hartford return connection, 536, 574 Health, effect of air pollution on, 288 Heat, 776 absorbed by building structure, 151 air infiltration equivalent of, 140 capacity, 85, 162, 776 of leader pipes, 419 conduction, 773 consumption, 509 content, of air and water vapor, 10 of dry air, 21 of saturated water vapor, 22 convection, 773 conversion equations, 785 demand, factors governing, 143 effects on human body, 59 electrical equivalents of, 709. 786 emission, of convectors, 521, 528 by radiation, 692 of radiators, 521, 528 equivalent, equivalents, 785 of air infiltration. 140 of brake horsepower, 150 electrical, 709, 786 exchanger, 204, 206 shell and tube, 193 flow meter, 104, 769 gain, from fixtures and machinery, 165 from outside air, 165 to be removed, 175 nfiltration equivalent of, 140 latent, 30 loss, 82 of the liquid, 27, 777 loss, from bare pipe, 653 computation of, 103, 152, 692, 707 determination of, 143, 150, 509, 689 effect of insulation on, 667 by evaporation, 32 from human body, 82, 689, 691 by infiltration, 140, 509 by intermittently heated buildings, 413 latent, 82 from piping of gas-fired furnaces, 504 Heat (continued), by radiation. 67, 689 sensible, 82, 691 to unheated rooms, 128 maximum probable demand. 143 mechanical equivalent of, 778 of the liquid, 27. 777 produced by cattle, 99 produced by human body, 58 pump, 52, 706 radiant, 724 radiation, 779 regulation in man, 58, 62 requirements, 510 sensible, 179, 776 of air, 10 loss. 82, 691 of water, 30 solar, 160 sources of, 689, 703 other than heating plant, 150, 187 specific, 30 total, 21. 282, 781 of saturated steam, 27 transmission, 103, 689 through air spaces, 106 through building materials, 106 calculations, 103 coefficients, 103, 126 of ceilings, 119 combined, 127 of doors, 125 of floors, 119 of insulation, 107 of roofs, 122 of skylights, 125 of walls, 112 of windows, 125, 164 convection equation, 689 definition of terms used, 104 effects of solar radiation on, 169 formulae, 105 through glass, 125, 164 measurement of, 769 in surface coolers, 177 by surfaces not exposed to the sun, 159 symbols used in formulae, 104 tables, 103, 107 time lag, 162 utilization, 509 Heaters, for domestic hot water, 645 electric, 700 capacity of, 709 radiant, 503, 701 space, 503 unit, 218, 219, 702 wall, 503 Heating (see also Heat) district, 292, 671 effect of radiators, 524 electrical, 699 elements, electric, 700 fundamentals of, 1 load, 143 medium, 776 radiant, 689, 700 railway air conditioning, 259 by reversed refrigeration, 52, 706 surface, 437, 777 square foot of, 780 systems, district, 671 electrical, 699 fan, 387 gravity warm air furnace, 417 . hot water, 587 mechanical warm air furnace, 403 radiant, 689 steam, 533 units, blow-through, 389 central fan, 389, 702 draw-through, 389 water, 629 Henry and Dalton, law of, 626 XIV Alphabetical Index to Technical Data Section Hoods, axial velocity formula, 375 canopy, 377 for chemical laboratories, 378 design of, 375 for exhaust systems, 371 of furnaces, 405 open. 377 suction pressures at, 374 Horsepower, 777 boiler, 439, 457, 772 ian, heat equivalent of, 150 Hot box, 104, 769 Hot plate, 769 Hot water heating systems, 587, 777 electric, 704 forced circulation, 589 gravity circulation, 597, 601- installation of, 603 mechanical circulation, 601 Hot water piping, 587 Hotels, stokers suitable for, 490 temperatures of in winter, 144 water supply, 629 Humidification, 20, 201 atomization for, 213 effective temperatures for, 75 methods of, 239 relative humidities for, 75 for residences, 414, 526 systems of, 212 with water pans, 526 in winter, 171, 526 Humidifier, humidifiers,~253 atomizing, 213 with fan systems, 398 high-duty, 213 spray, 214 types of, 213 Humidistat, 271. 411, 777 Humidity, 7. 75, 777 absolute, 7, 771 control, 269 railway air conditioning, 263 effect of on acoustics, 338 , for industrial processing, 718 measurement of, 766 relative, 8. 75. 779 (see also Relative Humidity) A.S.H.V.E. standards, 75 in comfort zone, 70 effect on moisture regain, 713 relation to dew point, 9 specific, 8, 777 Hygrodeik, 777 Hygroscopic materials, 712 moisture content, 711, 732 processing of, 717 regain, 711, 712 Hygrostat, 271, 777 I Ice, in air conditioning, 194, 241, 407, 415 Inch of water, 777 induction motor, 749, 760, 751 Industrial, air conditioning, 711 apparatus for, 212 automatic control of, 281 classification of problems, 714 ~ air pollution, 289 cooling systems. 182 drying, 318, 713 electrical heating systems, 706 exhaust systems, 371 heat sources, 150 plants, 711 processing of hygroscopic materials, 713 temperatures and humidities for, 718 ^ unit heaters, 228 Infants, premature, 69, 70 Infiltration, 771 average, 138 fuel utilization, 509 heat equivalent, 140 through shingles, 133 through walls, 132 through windows, 134 Inlet opening, long throw, 343 short throw, 344 Institutions, water supply to, 631 Instruments, 761 Insulation, 777 asbestos type, corrugated, 658, 659 laminated, 660, 661 of boilers, 448 bright metal foil, 125 . building, 708 characteristics of, 107, 657. effect on heat loss, 667 with electrical beating, 699 heat transmission through, 107, 657 for low temperatures, 656 of machinery, 333 magnesia type, 657 of piping, 653 to prevent condensation, 151, 153, 665 to prevent freezing, 663 reflective type, 125 rock wool type, 662 of sound, 330 tables, 107, 657 thickness needed, 666 types of, 108 underground, 667 of vibration, 334 Internal combustion engines, 207 Ionization of air, 80 Isobaric, 777 Isothermal, 7, 777 Internal moisture gradient, 734 J-K Joints, expansion. 571, 673 Kata thermometer, 76,.766 'L Latent heat, 30, 777 loss, 82 of water vapor, 10 Lead poisoning, 290 Leader pipes, 417 heat carrying capacity of, 419 size of, 419, 429 Leakage of air, 131 (see also Infiltration) Length of run, equivalent, 561 Libraries, air conditioning of, 720 Lignite, 472 Lithium chloride system of adsorption, 184 Liquid, heat of the, 27, 777 Load. cooling, 85, 157 design, 438, 775 heating, 143 . hot water supply, 441 maximum, 440 radiation, 440 Loft dryers, 728 Loudness, 325 Louver fences, 209 M Machinery, as heat source, 150, 166 sound insulation of, 333, 335 XV

Supply Mains {steam): The pipes through which the steam flows from the boiler or source of supply to the run-outs and risers leading to the heating units. .\ Surface Conductance: The amount of heat (Btu) transmitted by radiation, conduction, and convection from a surface to the air or liquid surrounding it, or vice versa, in one hour per square foot of the sui;face for a difference in temperature of 1 deg between the surface and the sur rounding air or liquid. '- Synthetic Air Chart: A chart for evaluating the air conditions maintained in a room

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

., Eagle Picher Lead Co., Research Lab., Joplin, Mo.

Certain very definite hazards are involved in the plants as now constituted, thus the spillage of Fluid at a point where the drums are now,stored (that is, on wooden skids on the ground) would so contaminate the ground as to make it difficult to get rid of spilled lead.

I doubt if the hazard is sufficient to justify warning posters as might be vised where lead, benzol or carton monoxide are concerned.

For the twenties Richard Tuffll qualified In the 440 and broad jump, while Richard Redeker won his heat In the 440 yard dash Sequoia and Han Jose were the leading qualifiers of the meet.

CPiffEH8ATI0K FOE OCCUPATIONAL BI3SA3ES ' Certain named diseases such as mercury poisoning, lead poisoning, etc. come under the Compensation Act of Rev Jersey.

vice piesident Ametican Cyanamid Company New York Committee on Tai iff--Chairman Howard I Young president Amer ican Zinc, Lead and Smelting Com pany St Louis and vice chairman, A C Ackerman, president, Ackshand Knitting Company, Ballston Spa, N Y

Reiter also pointed out that lead shortages had prompted the use of substitutes in many industries--printing and painting, for example--reducing the health risks in those industries (ibid.). 178.

The Food Division of the Company is making good progress; the plants are operating at capacity and the prospects for future-profits in this department of our business are exceedingly good Our Paint and Varnish Divisions, our Metals and Lead Divisions, and our Chemical and Pigment Division are all on an efficient and economical operating basis, and with the increase in industrial activity anticipated with the turn of the year, these Divisions will contribute materially to our income.

With colloidal silica, small amounts are completely removed; too large amounts lead to instantaneous death; intermediate doses as in the experiments described result in the formation of a complex between silica, fat, and protein. -- Cond. from Bull.Hyg.