Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 125
device for dividing the beam aa o pari of hi irer) ingeniousinstrument. This he discovered and acknowledged . houl lliree * i T^AuSor cannot allow this opportunitj to m r itboui i tprei lug hi* w&nmof the liberality with which Mr. Wenham freel) presented ... th, publ thii ....portant invention,… … Pig. 77—Eiddells binocularprisms, as applied by Mr.Stephenson. STEPHENSONS BINOCULA R IOI
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