Science on the 27th of February 1867 in history

Science

Date	Type	Text
27 Feb 1867 Dental mallet	science	Dental mallet In 1867, Dr. William G. Bonwill of Philadelphia, Penn., invented the dental mallet while watching a telegraph key sounder operate in a Philadelphia hotel.	0
27 Feb 1867 James Dunwoody Brownson De Bow	science	death James Dunwoody Brownson De Bow Died 27 Feb 1867 at age 46 (born 20 Jul 1820). American statistician and editor.	0

26th February 1867 28th February 1867

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Science on the 27th of February 1867 in history

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