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

EXPERIMENT II.

• August 5. 76.* 1.1 PEARS and Apricocks were shut up in Vacuo.
• Aug. 6. In 18 Hours the Mercury was rais'd 2 Inches; In ten Hours more the Height of it was 3 Digits.
• Aug. 7 The height was 5
• Aug. 8 The height was 6 ½
• Aug. 9 In 14 hours it was 7 ¼ Inc. hig.
• Aug. 10 The height was 8 ¾
• Aug. 11 The height was 10 ¾
• Aug. 12 The height was 12 ¼
• Aug. 13 The height was 14 ¼
• Aug. 14 The height was 16
• Aug. 15 The height was 18
• Aug. 16 The height was 20
• Aug. 18 The height was 25
• Aug. 19 The height was 29
• Aug. 20 The height was 31 ½
• Aug. 21 The height was 32 ½
• Aug. 22 The height was 34
• Aug. 23 The height was 35
• Aug. 26 The height was 38 ½
• Aug. 29 The height was 41
• Sept. 1 The height was 42 ½
• Sept. 4 The height was 44
• Sept. 7. The three last Days being hot, it was rais'd to 46 ¼
• Sept. 10 The height was 47 ½
• Sept. 13 The height was 44
• Sept. 23 The height was 48
• Sept. 27 The height was 50 ½
• Nov. 5 The height was 52 ⅓
• Nov. 28. The Apricocks were reduc'd to Water; the Skin being sever'd from the Pulp, no more Air was produc'd.

• Jan. 10. 77. It was a hard Frost, at which time the Mer∣cury came to 57 Inches. Upon a Thaw, it was depress'd to 23.
• March 3. The Apricocks were putrifi'd and had lost their Colour. Hence it is evident, that Apri∣cocks afford Air almost as fast in their wonted Pressure as in Vacuo.

Notes

• * 1.1

  Pears and Apricocks.