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from [[red underline]] Bureau of Standards [[/red underline]] 
At [[red underline]] experimental tank [[/red underline]] which is in charge of Captain [[red underline]] Egger [[/red underline]] met [[red underline]] Dr. [[Jahen?]] [[/red underline]] who is determining certain functions of weight of [[red underline]] airplanes [[/red underline]] etc and suggests use of [[red underline]] bakelite [[/red underline]] for venturi tube for measuring speed of airplane by pressure ^[[insertion]] of air [[/insertion]] developed in a venturi tube of brass  And a talk with [[red underline]] Admiral Dyson on propellers, [[/red underline]] as slip and so called negative slip.
Oct 22.  Same beautiful mild weather. [[red underline]] George Roll [[/red underline]] went with me to [[red underline]] Bureau of Standards. [[/red underline]] The new industrial laboratory in charge of Dr. Bates is a marvel specially the department of [[red underline]] optical glass [[/red underline]] and [[red underline]] ceramics. [[/red underline]]  Instead of furnishing optical glass in rectangular slabs or irregular masses

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they press it into discs, thus minimizing waste and facilitating working of the lenses.  They also have designed a mechanical stirrer.  Saw some beautiful barium-crown glass.  Lunch [[strikethrough]] Evening Ad. Smith took [[\strikethrough]] at [[red underline]] Bureau of Standards [[/red underline]] where met [[red underline]] Shatton, [[/red underline]] just back from Europe. [[red underline]] Wolf, Hillebrandt, Skinner, Voorhees, Walter etc. Burgess [[/red underline]] at the head of metals department, very impressive.
Evening [[red underline]] Adm. Smith [[/red underline]] took us both to [[red underline]] Chevy Chase Golf Club [[/red underline]] for supper where met [[red underline]] Christian Zabriskie, [[/red underline]] his wife and friends.
Oct 23. [[strikethrough]] A short visit to [[\strikethrough]]
[[red underline]] Stephen Mather, Commissioner of National Parks [[/red underline]] took me to his office and asked me to talk to the men and women of his offices, then took us to