Ms. notebook re experimental testing of explosives in 1891 whilst an employee of Robert Tatlock of Glasgow

[Ms. notebook re experimental testing of explosives in 1891 whilst an employee of Robert Tatlock of Glasgow] / Horatio Ballantyne. 1891. [c.30 pages comprise preliminary material copied from contemporary technical sources. Subsequent details of actual comparative experiments indicate that they were conducted at Nobel's explosives factory near Glasgow in connection with a dispute over a patent specification for smokeless powder. [Other pages bear copy letters of Ballantyne's widow to her solicitors etc. in 1956-7]