Philosophical, medical, and experimental essays ... To which is added an appendix; containing a letter to the author from Dr. Saunders, on the solution of human calculi / [Thomas Percival].

  • Percival, Thomas, 1740-1804
Date:
1776
Catalogue details

Licence: Public Domain Mark

Credit: Philosophical, medical, and experimental essays ... To which is added an appendix; containing a letter to the author from Dr. Saunders, on the solution of human calculi / [Thomas Percival]. Source: Wellcome Collection.

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    in Mephitic Water, has lately tried a fimilar experiment with two Hyacinths. And I fliall lay before the reader his account of the fuccefs of it. I December 2d, 1775. Two Hy- acinth bulbs, each weighing four drachms and a few grains, were placed in glaffes made for the purpofe of ve- getating bulbous roots. One glafs was fupplied with feven ounces and a half of pump water, impregnated with fixed air ^ the other with the fame quantity of rain water. Neither, of the plants had made much progrefs in vegetation. Some white fibrous roots were {hooting from the plant fupplied with rain water, but none from that which had the water with fixed air. ' I “ December 17th. Several beautl- “ fill white fibres were difcovered, flioot-