The London practice of physick, or, The whole practical part of Physick contained in the works of Dr. Willis faithfully made English, and printed together for the publick good.

Prescripts of Diureticks that have an Acid Salt for their Basis.

TAke choice white Tartar powder'd, Crystal Mineral of each a Dram and a half, Powder of Crabs Eyes a Dram: Make a Powder, the Dose is from half a Dram to two Scruples in a fit Vehicle, repeat∣ing it every sixth or eighth hour.

Take Tartar vitriolated or nitrated two Drams, Powder of Egg∣shells a Dram and a half, Seeds of Parsly, or of wild Carrots half a Dram: Make a Powder, the Dose is half a Dram, after the same manner.

Take of the best Spirit of Salt two Drams, Hartshorn burnt and powdred, what will suffice to imbibe it: Make a Powder, the Dose is from a Scruple to half a Dram.

Take Juice of Limmons two Ounces, Radish water Compound, an Ounce and a half, Syrup of the five Roots three Drams: Make a Potion.

Take Juice of Sorrel two Ounces, Whitewine six Ounces: Mingle them for a Potion.

Take Radish water Compound two Ounces, Water of Pellitory of the Wall four Ounces, Spirit of Salt a Scruple, twenty five drops, Salt of Tartar fifteen Grains, Syrup of Violets half an Ounce: Make a Potion.

That Medicines containing a fixt or Lixivial Salt move Urine, it plainly enough appears from the Vulgar and Empyrical Practice of Physick, which commonly gives them for Curing Hydropical persons: For its a usual thing in an Anasarca, and sometimes in

an Ascites, when the Viscera, or Fleshy parts are very much swollen by a loading of Waters: To give a Lixivium made of the Ashes of Wormwood, or of Broom, or of Bean-stalks with Whitewine, whence it frequently happens that a very plentiful evacuation by Urine follows, and that the Disease is taken away. Nevertheless I have observ'd that this Medicine has not prov'd Diuretick to some per∣sons, and rather to have encreast the Hydropical disposition, than to have cur'd it. The reason of which if we enquire into, we shall find by what is said before, that Lixivial Salts neither fuse Milk, nor Blood, or precipitate them, and therefore that they are not Diuretick in their own nature, though that effect sometimes follows; because that a fixt Salt taken in a good plenty, destroys the Energy of the Acid, and coagulative Salt predominating in the Blood; so that the said Blood, which before being too apt to fusion, and unable to contain its Serum, did cast it off from it self in divers places, now by the intercession of the fixt Salt, re∣covers its due Crasis, and therefore drinking up again its extrava∣sated Serum, and constantly carrying it to the Reins, causes a large Evacuation by Urine.