11. Gelatine dissolves in hot water but boiling water is necessary to dissolve gulaman.12. Unlike gelatine which sets at refrigerator temperature, gulaman sets at room temperature. 13. Gelignite was introduced in the 1890s, replacing both blasting gelatine and gunpowder. 14. The process uses a film of gelatine spread on a flat and rigid surface. 15. During this time the sunlight and potassium dichromate tan the gelatine exposed to light. 16. The plate is developed by washing in warm water and removing the untanned gelatine . 17. The fabric was first stretched on a tenter frame and sized with animal gelatine . 18. Warsop and Hill used their own rock drills and the more powerful blasting gelatine . 19. Thomas warns that strength of the punch is " artfully concealed " by the gelatine . 20. Prior to rubber moulds gelatine was used.
