Letter from James Dewar, 1 Scroope Terrace, Cambridge, to [Joseph] Larmor Dewar made the experiments yesterday and will not be able to continue for a couple of days, but asks for Larmor's opinion. The question is of the possible isolation of molecular CS [carbon monosulphide?] and he gives an extended account of his experiments, wiuth a sketch of his apparatus showing an electrodeless discharge tube between elemenst of liquid air, carbon disulphide and solid carbon dioxide, the objective being 'to get a continuous and rapid current of CS2 [carbon disulphide] passing through the electrodeless tube and condensing in the charcoal sink in L.[iquid] air. He describes what he observed before having to go away, at which time there was an explosion which blew out the tube. He cannot explain the detonation unless by the production of CS. Dewar will work this out but he asks Larmor if it is correct to view CS2 as an endothermic body and asks what he thinks about the whole affair. 31 January 1910