Notebook entitled 'Experimental testing of explosives in 1891 whilst an employee of Robert Tatlock of Glasgow by H. Ballantyne'

Notebook containing preliminary material copied from contemporary technical sources. Subsequent details of actual comparative experiments indicate that testing was 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.]