Sprengel will always be remem bered for his ... and for his improvements in explosives. In 1871 he took out patents for a class of explosives which were non-explosive during manufacture, storage ...

Dr. Odling, F.R.S., president, the chair.—Dr. H. Sprengel, “On a new class of explosives,” gave an account of some new explosives consisting of two liquids inexplosive by themselves ...