EF^IOIE^CY IS I^HE3RE3STT in NIALK* chemicals, because they are processed for highest purity and uniformity...to give best results in your processes. NIALK NIALK NIALK NIALK NIALK NIALK NIAGATHAL* •Trade-mark
Liquid Chlorine Caustic Potash Carbonate of Potash Paradichlorobenzene Caustic Soda TRICHLORethylene (Tetrachloro Phthalic Anhydride)
K A L I C«Text New TextNew 6 0 East 42nd Street, New York 17. Ν. Υ.
V O L U M E
29, N O . 3 3
» ·
AUGUST
13,1 9 5 1
3319