SCPFLUORO-~ DEOX OXY STEROIDS 2633 and the methylene dichloride layer of the filtrate was dried over Acknowledgment.-Appreciation is extended to fifrs, sodium sulfate. This solution was concentrated to a residual G. A. Snyder for technical assistance, to M~. H~~~~~ solid which was heated for 1 hr. with 50 ml. of acetic anhydride and 100 ml. of pyridine. Cooling of the reaction mixture and Warrington for gas chromatographic analyses, to Dr. dilution with 3 1. of cold water gave a solid which was recrystal-B. F. Tullar and Mr. E. J. Johnson for checking and lized once from ethyl acetate. The 176-acetoxy-5a-androstan-3-refining the procedure for preparation of the 2-one so obtained (62 g., 497, yield) melted a t 156-159'. Its identity was confirmed by infrared spectral comparison with an ketone under Optimum and to Dr. c. F. authentic sample.Koelsch for helpful discussions.

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Recently, office communication systems have begun to integrate voice recordings into their mail and data communications facilities. The study of usage patterns on one such system shows that voice is used for informal, person-to-person communications, as opposed to the formal content of typed messages. Voice messages are generally sent to fewer recipients (often only one), and sometimes replace face-to-face meetings.

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