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[[preprinted]] 116 [[preprinted]] chemical congress. After trying in vain to get Celine at telephone had to take supper alone so went to Mouquin where I met Mr. Tyndale and spent a pleasant evening. Arrived home about 10.30 P.M. Have sent check $100.00 to mother. Next check due July 14 from here. [[margin]] June 10 [[/margin]] Nice day. Busy in study and in laboratory until 6 P.M. when Toch came here and stayed with us over night. Showed him my latest work and read him my controversy with German Patent Office. [[margin]] June 11 [[/margin]] Toch left here at 11.30 A.M. I spent remainder of day in [[end page]] [[start page]] [[preprinted]] 117 [[/preprinted]] laboratory trying steam engine and stirrer of vacuum pan. Found necessary to substitute chain to belting. [[margin]] June 12 [[/margin]] Busy all morning dictating letters and making test for Bakelite license. [[strikethrough]] asked [[/strikethrough]] Thurlow in New York looking up matter of water vacuum pump. Lewis busy adjusting stirrer and packing Westinghouse Air Brake ^[[insertion]] compressor [[/insertion]] to be [[strikethrough]] returne [[/strikethrough]] exchanged for high-pressure pump [[margin]] June 13 [[/margin]] Beautiful day. letter writing and some laboratory work Evening Mr & Mrs Branchi here for supper [[margin]] June 14 [[/margin]] Spent most of the day in my laboratory repeating Fayolle patents. Afternoon reading and writing. Beautiful weather