22 AGRICULTURAL SURVEY

Theſe two wells are incloſed with a handſome ſtone- « wall, Over the ſprings are placed two convenient ba- « ſons of Portland ftone, with perforations at the bottom, €“ through which they receive the water; which at the ſpring is extremely clear and bright. Its taſte is fteely, but not diſagreeable; it has hardly any ſmell, though “ ſometimes, in a denſe air, its ferruginous exhalations are very diſtinguiſhable, Inñ point of heat, it is in- “ variably temperate; the ſpring lying ſo deep in the « earth, that neither the heat of ſummer nor the cold of & winter affeds it. € When this water is firſt taken up, its particles con- <c tinne to reft till it 1s warmed to nearly the heat of the <“ atmoſphere; then a few airy globules begin to ſeparate & themſelves, and adhere to the ſides of the glaſs, and in a few hours a light copper cóloured ſcum‘begins to «e float on the ſurface; after which an ochreous ſediment € ſettles at the bottom. Long continued rains ſometimes “ give the water a milky appearance; but do not other- “ wiſe ſenſibly affe& it. From the experiments of dif- € ferènt phyſicians, it appears, that the compotent parts of this water.are feely particles, marine ſalts, an oily € matter, an ochreous ſubſtance, finiple water, and a vo=- é latile vitriolic ſpirit too ſubtile for any chymical ana- € lyſis, In weight, it isin ſeven ounces anda quarter, four & grains lighter than the German Spa(to which it is é preferable on that account) and ten grains lighter than € common water. It requires five drops of oleum ſul- € phuris, or elixir of vitriol, to a quart of water, to pre- & ſerve its virtues toa diſtance from the ſpring. This & water is ſaid to be an impregnation of rain in ſome “ of the neighbouring eminences, which abound in € iron mineral; where it is further enriched with the “ marine ſalts and all the valuable ingredients which ““ con=-

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