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Andrew Howatson (1845-1906)
1871 Patented heating and puddling furnaces. 
1883 A. Howatson of 85 Gracechurch Street, London, E.C.
1907 Obituary 
ANDREW HOWATSON, born on the 7th March, 1845, obtained his early practical experience in the Gartsherrie Ironworks of Messrs. William Baird and Company, and after serving short periods of employment with a firm of mining engineers and in Messrs. Napiers’ shipbuilding works at Glasgow, he re-entered Messrs. Baird’s service and was Manager of their Muirkirk Ironworks in Ayrshire from 1868 to 1871.
Subsequently he acted as Manager to the Welch Ironworks Company, Aberdare; and from 1873 until his death, he was engaged in consulting practice on his own account in this country and in France. During this time he was principally occupied in working out processes for the economical burning of coal in furnaces, and for the softening and purification of water for sanitary purposes, the Howatson purification system being extensively adopted in France and Belgium.
He died at his residence at Neuilly-sur-Seine on the 21st July, 1906, aged 60.
Mr. Howatson was elected an Associate Member of The Institution on the 5th March, 1889.