122 CHAPTER 5 tar dyes, bright green copper sulfates (banned in 1887 but relegal ized in 1928 so domestic vegetables could compete with French produce), and much else besides.

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ASBESTOS CLOTHING DEVELOPMENT 1926 1946 (liiiinj u > ht'tiiivtiHjniii rrjmrt ,,m A\h* *h>\ S It I!

36 Am.

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American Society of Heating and Ventilating Engineers Guide, 1924-25 Piston speeds infeet per minute for reciprocating boiler feed pump ought not to exceed 10 times the square root of the number of inches in the length of stroke of the water pistons.

American Society of Heating and Ventilating Engineers Guide, 1925-26 CONDENSATION RETURN PUMPS Condensation return pumps may be of the following types: a.

Roll of Membership SCHILDMILLER, George H. (1922), (for. mall) Asst.

American Society of Heating and Ventilating Engineers Guide, 1928 -*o 60 eo .too izo tzo /so /ao Temp.

American Society of Heating and Ventilating Engineers Guide, 1928 of the chimney.

American Society of Heating and Ventilating Engineers Guide, 1928 Table 1.

American Society of Heating and Ventilating Engineers Guide, 1929 On new jobs it is advisable wherever possible to drain condensation directly to sewer during first week of operation, thereby preventing pass age of grease and dirt to the boiler from the system.

American Society- of Heating and- Ventilating Engineers Guide, 1929 .

American Society of Heating and Ventilating Engineers Guide, 1929 ; capacity, of standard machine and twice this amount for high duty machines, may be figured per hour.