Proposal for establishing in Edinburgh, and other towns, a newly improved apparatus, for the application of the vapour of water, sulphur, and other medicinal substances, found so efficacious in the cure of rheumatism and diseases of the skin. With a paper upon the subject, which has been submitted to the perusal and received the approbation of Dr Hamilton, Sen. Dr Gregory, Dr Barclay, Dr Farquharson, and Mr Bryce