Complex sentence: Gougaud, p.104 Upon the insistence of the inventor, modifications were made and new trials organized on 4 November 1915, and 17 August 1916, until complete abandon of the project.
Split into simpler sentences: Gougaud, p.104 Upon the insistence of the inventor, modifications were made and new trials organized on 4 November 1915. The model was tried again on 17 August 1916, until complete abandon of the project.