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John David Barry (1832-1881)
1881 Obituary 
. . . After serving his pupilage for two years at Glasgow under the late Robert Napier, M. Inst. C.E., Mr. Barry was engaged for some time on railway surveys in France, and also acted for two years as assistant-engineer under Mr. G. Woodhouse, engineer for the construction of Le Mans railway.
In the spring of 1855 he went to Scinde, as first-class assistant-engineer on the Scinde, Punjaub and Delhi Railway, where he remained for three years. . .
Returning to Europe in 1858, Mr. Barry was engaged for the next few years on railway surveys in Italy and in Germany, and was appointed chief of a considerable staff of engineers . . .
In 1865 he proceeded to Spain, and during the succeeding five or six years resided at Barcelona, where he held the post of Chief Engineer to some Catalonian companies formed for the construction of the important irrigation canals . . .