PNEUMATICS Aug. 21. The afcent of the mercury was 5. 23. The afcent of the mercury was 1. 26. For three whole days the afcent of it was 2. 27. There was no afcent of the mercury. 29. I took out the paste, exhaufted of its air, from the receiver. This experiment farther confirms, that air is fometimes more eafily produced in vacuo, than in common air. Filberd kernels (137.) Sept. 4. 1677. I put the kernels of filberds into an exhausted in vacuo. receiver. And filberd kernels in com- air. mon air. And raifins with water in common air. Sept. 15. The height of it was almost the fame. 17. The height of it was 30. 18. This day the air began to get out of the receiver; for fome bubbles appeared in the turpentine, which clofed the juncture of the receiver and cover. (138) Sept. 4. I put kernels of filberds into a receiver with common In the afternoon the quantity of air feemed to be lessened. Sept. 5. The height of the mercury was lefs than half an inch. 7. The height of it was one inch. 18. The fame height continued. This experiment confirms, that fometimes air is produced much more easily in vacuo, than in common air. (139.) September 15. 1677. I included 8 ounces of raifins of the fun, bruifed and diluted with a little water, in an exhausted receiver, able to hold 22 ounces of that fluid. Sept. 16. The height of the mercury was fix inches. Sept. 21. This day I found the receiver forced from its cover. Sept. 24. I took out fome of the raifins, but thofe that remained I inclofed in the fame evacuated receiver. Sept. 25. The raifins forced the receiver, now full of air, from its cover. September 15. 1677. I put 8 ounces of raifins of the fun, bruised and diluted with a little water, into a receiver, able to hold 22 ounces of water; but did not exhauft the air at all. Sept. 16. The mercury was 3.quarters of an inch above its ufual height. Permitting the air to break out, many bubbles emerged from the raifins. This experiment further teaches, that air is fometimes much more easily produced in vacuo, than in common air. (140.) February 17. 1677. I put three onions into an exhausted receiver. Onions in vaFeb. 19. The height of the mercury was one inch. 21. The afcent thereof was again 1. The onions were not alter'd. May 4. 18. Neither were they yet alter'd. June 19. I found the receiver forced from its cover, and the onions rotten. cuo. Feb. 17. I inclofed three onions in air, fo rarified, that it could fuftain Onions in raonly ten inches of mercury. Feb. 19. There was no afcent of the mercury. 21. There was yet no afcent thereof. The onions did not fprout, 25. The afcent of the mercury was about 7 inches. The onions received no further alteration. May 4. The onions were not alter'd. 18. The onions were not yet alter'd; but the receiver, by the force of the produced air, was removed from its cover. Feb. 17. I put three onions in a receiver not exactly shut. 21. They contracted no mouldinefs, but fprouted. 25. They gradually took root. May 4. The onions began to be mouldy. This experiment makes it probable, that fome bodies produce their air not much more eafily in vacuo, than in rarified air. It hence alfo appears, that vegetation is hinder'd, not only by the evacuation, but also by the rarifaction of the air. It likewise deserves our obfervation, that the onions, as long as their roots fprouted, contracted no mouldinefs. (141.) August 23. 1677. I put bruifed pears into an exhausted receiver, with a mercurial gage. August 25. The height of the mercury was five inches. rified air. And onions in common air. The difference betwixt whole, and bruijed fruits, fhewn in bruifed pears Aug. 26 Aug. 29 21 27 The height of it was 14 30 The height was 251 in vacuo. 31 28 Sept. 1. The height of it was 30. 2. The receiver was forced from the cover. Auguft 23. I put whole pears into an exhausted receiver; the quantity And whole of the pears, and the capacity of the receiver, being the fame with thofe pears in vacuo. just mentioned. Aug. 25. The height of the mercury was II. Aug. PNEUMATICS in vacuo. Aug. 21. The afcent of the mercury was 5. 23. The afcent of the mercury was 1. 26. For three whole days the afcent of it was 2. 27. There was no afcent of the mercury. 29. I took out the paste, exhausted of its air, from the receiver. This experiment farther confirms, that air is fometimes more eafily produced in vacuo, than in common air. (137) Sept. 4. 1677. I put the kernels of filberds into an exhausted receiver. Sept. 5. The height of the mercury was 5 inches. And filberd kernels in com- air. men air. And raifins with water in common air. Sept. 15. The height of it was almost the fame. 17. The height of it was 30. 18. This day the air began to get out of the receiver; for fome bubbles appeared in the turpentine, which clofed the juncture of the receiver and cover. (138) Sept. 4. I put kernels of filberds into a receiver with common In the afternoon the quantity of air feemed to be leffened. Sept. 5. The height of the mercury was lefs than half an inch. 8. The fame height continued. 18. The fame height continued. This experiment confirms, that fometimes air is that fometimes air is produced much more easily in vacuo, than in common air. (139.) September 15. 1677. I included 8 ounces of raifins of the fun, bruifed and diluted with a little water, in an exhaufted receiver, able to hold 22 ounces of that fluid. Sept. 16. The height of the mercury was fix inches. 10 Sept. 197 Sept. 21. This day I found the receiver forced from its cover. Sept. 24. I took out fome of the raifins, but thofe that remained I inclofed in the fame evacuated receiver. Sept. 25. The raifins forced the receiver, now full of air, from its cover. September 15. 1677. I put 8 ounces of raifins of the fun, bruifed and diluted with a little water, into a receiver, able to hold 22 ounces of water; but did not exhauft the air at all. Sept. 16. The mercury was 3.quarters of an inch above its ufual height. 15 20 The height of it was 7 21 9 24 Permitting the air to break out, many bubbles emerged from the raifins. This experiment further teaches, that air is fometimes much more easily produced in vacuo, than in common air. (140.) February 17. 1677. I put three onions into an exhausted receiver. Onions in vaFeb. 19. The height of the mercury was one inch. 21. The afcent thereof was again 1. The onions were not alter'd. May 4. The onions had yet fuffered no alteration. 18. Neither were they yet alter'd. June 19. I found the receiver forced from its cover, and the onions rotten. Feb. 17. cuo. I inclofed three onions in air, fo rarified, that it could fuftain Onions in rarified air. only ten inches of mercury. Feb. 19. There was no afcent of the mercury. 21. There was yet no afcent thereof. The onions did not sprout, but contracted a mouldinefs. 25. The afcent of the mercury was about 7 inches. The onions received no further alteration. May 4. The onions were not alter'd. 18. The onions were not yet alter'd; but the receiver, by the force of the produced air, was removed from its cover. Feb. 17. I put three onions in a receiver not exactly fhut. 21. They contracted no mouldinefs, but fprouted. 25. They gradually took root. May 4. The onions began to be mouldy. This experiment makes it probable, that fome bodies produce their air not much more eafily in vacuo, than in rarified air. It hence alfo appears, that vegetation is hinder'd, not only by the evacuation, but also by the rarifaction of the air. It likewise deferves our obfervation, that the onions, as long as their roots sprouted, contracted no mouldinefs. (141.) August 23. 1677. I put bruifed pears into an exhaufted receiver, with a mercurial gage. August 25. The height of the mercury was five inches. Aug. 26 27 The height of it was 28 And onions in common air. The difference betwixt whole, and bruijed fruits, fhewn in bruifed pears } 10 Aug. 29) 21 14 30 The height was 25 in vacuo. 18 31 28 Sept. 1. The height of it was 30. 2. The receiver was forced from the cover. Auguft 23. I put whole pears into an exhausted receiver; the quantity And whole of the pears, and the capacity of the receiver, being the fame with those pears in vacuo. just mentioned. Aug. 25. The height of the mercury was 11. Aug. PNEUMATICS Aug. 26 The height 17 I Aug. 282 The height 28 30 Aug. 30. The mercury afcended no higher; the receiver being forced from the cover. This experiment feems to prove, that bruised fruits do not produce air fo foon as entire ones. In whole apples (142.) August 24. I enclosed whole apples in vacuo, with a mercurial in vacuo And bruised apples in va cuo. In bruifed grapes in va cuo. And whole grapes in va cuo. gage. Aug. 25. The height of the mercury was five inches. Aug. 26 27 28 The height of it was 12 30 The height was 25 15 September 1. The height of it was 29. 2. The height of it was 30. بري 31 3. The receiver was forced from the cover. 28 August 24. I put an equal quantity of bruifed apples iuto an evacuated receiver, of the fame capacity with the former. Aug. 25. The height of the mercury was one inch. 26. The height of it was three. Sept. 3. The mercury continued at the fame height. This experiment feems to inform us, that bruised fruits produce air, flower than whole ones. (143.) August 25. 1677. I put unripe grapes, bruised, into an evacuated receiver. Aug. 26. The height of the mercury was one inch. 28. The height of it was two and a half. 29. The height of the mercury was the fame. Sept. 15. The mercury did not afcend, but its height remain’d at 2 + Aug. 25. 1677. I put whole unripe grapes into an evacuated receiver. Aug. 26. The height of the mercury was three inches. 27. The height of the mercury was five. Aug. 28The height 7 Aug. 30The height S12 31S was 213 Sept. 1. The height of the mercury was 15. 2. The height of it was 16. 3. The height of it was 18. 4. The height of it was the fame. Sept. 5. The height of the mercury continued the fame; but almoft all the grapes had contracted a yellow colour. Sept. 7. The mercury refted at the fame height; and all the grapes were yellow. Sept. 15. The height of the mercury was 20. |