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The works of the Honourable Robert Boyle, Esq., epitomiz'd by Richard Boulton ... ; illustrated with copper plates.

About this Item

Title
The works of the Honourable Robert Boyle, Esq., epitomiz'd by Richard Boulton ... ; illustrated with copper plates.
Author
Boyle, Robert, 1627-1691.
Publication
London :: Printed for J. Phillips ... and J. Taylor ...,
1699-1700.
Rights/Permissions

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Subject terms
Physics -- Early works to 1800.
Chemistry -- Early works to 1800.
Medicine -- 15th-18th centuries.
Link to this Item
http://name.umdl.umich.edu/A28936.0001.001
Cite this Item
"The works of the Honourable Robert Boyle, Esq., epitomiz'd by Richard Boulton ... ; illustrated with copper plates." In the digital collection Early English Books Online 2. https://name.umdl.umich.edu/A28936.0001.001. University of Michigan Library Digital Collections. Accessed June 15, 2024.

Pages

EXPERIMENT XII.
  • August 4.* 1.1 FOur Pieces of Pear being clos'd with Com∣mon Air in a Receiver.
  • August 6. The Colour of this Fruit was equally alter'd as of others: The Mercury ascended not.
  • August 7. The Mercury ascended a little, the Alteration in the Pears being small.
  • August 8. They were very little Alter'd; the Cylinder of Mercury was 4 Inches.
  • August 9. It was 4 ½.
  • Aug. 10 It rose to 6
  • Aug. 11 It rose to 10
  • Aug. 13 It rose to 16
  • Aug. 4 It rose to 20
  • The Pears grew softer.
  • Aug. 15 It was 21
  • Aug. 16 It was 19
  • Aug. 17 Air got out.
  • Aug. 8 The Air being got out, and the Fruit taken out, it was rotten.
  • August 4. Other Pieces of the same Fruit being shut up with as much Artificial Air of Cherries as sus∣tain'd 23 Digits of Mercury above it's usual height.
  • August 6. The Colour of them was a little alter'd.
  • August 7. They were almost all Rotten: The Mercury neither subsiding nor ascending.

Page 76

  • August 8. They were in some Measure alter'd.
  • August 10. They gradually became softer: The Mercury being rais'd 40 Digits.
  • Aug. 11 It rose to 51
  • Aug. 13 It rose to 61
  • Aug. 14 It rose to 67
  • Aug. 15 It rose to 73
  • Aug. 16 It rose to It Descended, tho' no Air made it's way out.
  • August 17. The Mercury was 67 Digits high: No Air got out.
  • August 18. The Mercury subsided not: The Taste of the Fruit was Acid, and their substance very soft; the Air contain'd in the Receiver likewise, smelling very sharp.
  • August 4. 77. Pieces of the same Fruit being enclos'd in a Receiver.
  • August 6. They alter'd their Colour.
  • August 7. A piece of a Pear became soft: and another in Artificial Air was putrid the Day before.
  • August 8. They were all soft; and one was Moul∣dy.
  • August 9. Their Rottenness gradually encreas'd.
  • August 11. They were altogether Rotten and Mu∣cid.

Page 77

    From this Experiment and the former it ap∣pears, that Rottenness is equally promoted, in included and open Air, tho' much faster carri'd on in the Latter.

    • August 4. 77. Several Pieces of Pears being shut up in Va∣cuo.
    • August 6 The height of the Mercurial Cy∣linder was 5 Digits.
    • Aug. 7 It rose to 8
    • Aug. 8 It rose to 10
    • Aug. 9 It rose to 12
    • Aug. 10 It rose to 14
    • Aug. 11 It rose to 16
    • Aug. 13 It rose to 20
    • Aug. 14 It rose to 23
    • Aug. 15 It rose to 25
    • Aug. 17 It rose to 28
    • August 20. They were not in the least Chang'd till to Day; when being soft, the Mercury was at a stand.
    • August 26. All things Remain'd as before.
    • From which Experiments it appears, how apt Artificial Air is to soften Fruit.

    Notes

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