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RECEIVED for review November 1. 1955 ACCEPTED May 25’, 1956 Division of Gas and Fuels and Division of Petroleum Chemistry, 128th Meetinc, ACS, Minneapolis, Minn.’, -September 193.5
Corrections
In the article entitled “Thermal Degradation of Unvulcanized and Vulcanized Rubber in a Vacuum” by Sidney Straus and S. L. Madorsky [IND.ENG. CHEW 48, 1212 (1956)] the figures should refer to samples as follows: Figures 4 and 3, Vulcanized rubber sample 3 ; Figures 6 and 7, Vulcanized iubber sample 4 ; Figures 8 and 9, Vulcanized rubber sample 5; Figures 10 and 11, Vulcanized rubber sample 6; Figures 12 and 13, Vulcanized rubber sample 9.
T h e following changes apply to “Electrolytic Reduction of Phthalic Acid,” Paul C. Condit, IND.ENG. CHEM.48, 1252-7 (1956). Page 1254, Figure 5 should be reversed (see correct position a t left). Page 1255, column 3, the sixth line from the bottom of column should read: Figure 7 shows a side view of the cell assembly with the threaded cup.
1948
INDUSTRIAL AND ENGINEERING CHEMISTRY
