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John Hardcastle Naylor (1873-1910)
1910 Obituary 
JOHN HARDCASTLE NAYLOR was born at Leeds on 22nd January 1873.
He was educated at the Leeds Higher Grade School, the Holbeck Mechanics Institute, and the Yorkshire College, Leeds.
In 1893 he was engaged at the Erith Works of Messrs. Easton, Anderson and Goolden, and two years later became Instructor in Machine and Mechanical Drawing under the London School Board.
This was followed by his appointment in 1897 as Instructor and Lecturer at the Woolwich Polytechnic, and in the following year he became Assistant Instructor in Workshop Practice and Lecturer on Steam- and Gas-Engines at the Royal Military Academy, Woolwich.
This position he was holding at the time of his death, which took place at Plumstead on 20th October 1910, in his thirty-eighth year.
He became an Associate Member of this Institution in 1903.