Observations on the nature and properties of fixible air : and on the salutary effects of the aqua salubris, in preserving health, and preventing diseases : to which are added, strictures on the present practice of physic, pointing out the causes which greatly obstruct the improvement of the healing art / By John Melvill.
- Melvill, John.
- Date:
- [1787]
Licence: Public Domain Mark
Credit: Observations on the nature and properties of fixible air : and on the salutary effects of the aqua salubris, in preserving health, and preventing diseases : to which are added, strictures on the present practice of physic, pointing out the causes which greatly obstruct the improvement of the healing art / By John Melvill. Source: Wellcome Collection.
Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.
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![[ 23 ] with lefs danger to the gMies. At the fecond fetting, half of the contents in the bottom vef- fel may be decanted, and frefh materials added, , of water, vitriol, and marble dulf, until fuffi- ciently impregnated; but at eveiy third fet- ting, the bottom veflel fhould be made per- fectly clean, and the whole apparatus fhould be wafhed clean every week. As foon as the water is fufficiently impregnated, it fliould be put into bottles, well corked, and fealed w:ith wax, and the bottles fliould be placed on their lides, in the coidefh corner of the cellar. If it is ufed from the apparatus, the ullage foon grows vapid. The Fixibie Air being very volatile, afccnds to the empty fpace, and flies oft at the top, or with the water when it is drawn off: and this is a certain proof of its be- ing genuine ^ for when there is any vegetable or mineral acid mixed with //, an acidulous tajie ranains for many days in the ullage, as hap- ji'hole,. about an equ 'f bulk of air has been thrown intq it; dlfo fhalce the water as b;;fore, till no more of the air can be imbibed. As foon as this is perceived to be the cafe, the water is ready for ufe; anti if it be not ufed immedi- ately, fhould bfe put into a bottle as foon as poffible, well corked and cemented. Extracted from Dr. Prieflley's Experiments on Air. fens](https://iiif.wellcomecollection.org/image/b21483188_0034.jp2/full/800%2C/0/default.jpg)
