Airopaidia

by Thomas Baldwin

The 1st Column shews the Quicksilver in the barometric Tube standing at each Inch from 1 to 10, and at each Tenth from 10 to 32 Inches.

The 2d Column shews the Height of the barometric Tube, above the imaginary Level at 32 Inches,—with the Temperature of 31.24;—in Feet and Tenths, answering to Inches and Tenths of the Barometer in the first Column.

The 3d Column shews the Height in Feet and Tenths, answering to a Tenth of an Inch on the Barometer, being the difference between each two adjoining Heights in the 2d Column.

Inch.	Feet.	Differ- ence.	Inch.	Feet.	Diff.	Inch.	Feet.	Diff.
1	90309.0	18061.8	16.8	16790.4	154.6	24.5	6959.0	106.1
2	72247.2	10565.4	.9	16635.8	153.7	.6	6852.9	105.7
3	61681.8	7496.4	17.0	16482.1	152.9	.7	6747.2	105.3
4	54185.4	5814.6	.1	16329.2	151.9	.8	6641.9	104.9
5	48370.8	4750.9	.2	16177.3	151.1	.9	6537.0	104.4
6	43619.9	4016.8	.3	16026.2	150.2	25.0	6432.6	104.0
7	39603.1	3479.5	.4	15876.0	149.3	.1	6328.6	103.6
8	36123.6	3069.2	.5	15726.7	148.5	.2	6225.0	103.2
9	33054.4	2745.4	.6	15578.2	147.6	.3	6121.8	102.8
10.0	30309.0	259.6	.7	15430.6	146.8	.4	6019.0	102.4
.1	30049.4	256.4	.8	15283.8	146.0	.5	5916.6	102.0
.2	29793.0	254.3	.9	15137.8	145.2	.6	5814.6	101.6
.3	29538.7	251.8	18.0	14992.6	144.3	.7	5713.0	101.2
.4	29286.9	249.3	.1	14848.3	143.6	.8	5611.8	100.8
.5	29037.6	247.0	.2	14704.7	142.8	.9	5511.0	100.6
.6	28790.6	244.7	.3	14561.9	142.0	26.0	5410.4	99.8
.7	28545.9	242.4	.4	14419.9	141.2	.1	5310.6	99.7
.8	28303.5	240.2	.5	14278.7	140.5	.2	5210.9	99.3
.9	28063.3	237.9	.6	14138.2	139.7	.3	5111.6	98.8
11.0	27825.4	235.8	.7	13998.5	139.0	.4	5012.8	98.6
.1	27589.6	233.7	.8	13859.5	138.2	.5	4914.2	98.1
.2	27355.9	231.6	.9	13721.3	137.5	.6	4816.1	97.8
.3	27124.3	229.6	19.0	13583.8	136.8	.7	4718.3	97.4
.4	26894.7	227.6	.1	13447.0	136.1	.8	4620.9	97.0
.5	26667.1	225.6	.2	13310.9	135.3	.9	4523.9	96.7
.6	26441.5	223.7	.3	13175.6	134.5	27.0	4427.2	96.4
.7	26217.8	221.7	.4	13041.1	134.2	.1	4330.8	95.9
.8	25996.1	220.0	.5	12906.9	133.3	.2	4234.9	95.7
.9	25776.1	218.0	.6	12773.6	132.6	.3	4139.2	95.2
12.0	25558.1	216.3	.7	12641.0	131.9	.4	4044.0	95.0
.1	25341.8	214.4	.8	12509.1	131.3	.5	3949.0	94.5
.2	25127.4	212.7	.9	12377.8	130.6	.6	3854.5	94.3
.3	24914.7	211.0	20.0	12247.2	130.0	.7	3760.2	93.9
.4	24703.7	209.3	.1	12117.2	129.3	.8	3666.3	93.6
.5	24494.4	207.7	.2	11987.9	128.7	.9	3572.7	93.2
.6	24286.7	206.0	.3	11859.2	128.0	28.0	3479.5	92.9
.7	24080.7	204.3	.4	11731.2	127.4	.1	3386.6	92.6
.8	23876.4	202.8	.5	11603.8	126.8	.2	3294.0	92.2
.9	23673.6	201.2	.6	11477.0	126.2	.3	3201.8	91.9
13.0	23472.4	199.7	.7	11350.8	125.6	.4	3109.9	91.6
.1	23272.7	198.2	.8	11225.2	125.0	.5	3018.3	91.3
.2	23074.5	196.6	.9	11100.2	124.4	.6	2927.0	90.9
.3	22877.9	195.2	21.0	10975.8	123.7	.7	2836.1	90.7
.4	22682.7	193.7	.1	10852.1	123.3	.8	2745.4	90.3
.5	22489.0	192.4	.2	10728.8	122.6	.9	2655.1	90.0
.6	22296.6	191.0	.3	10606.2	122.0	29.0	2565.1	89.7
.7	22105.6	189.4	.4	10484.2	121.5	.1	2475.4	89.4
.8	21916.2	188.1	.5	10362.7	120.9	.2	2386.0	89.1
.9	21728.1	186.8	.6	10241.8	120.4	.3	2296.9	88.7
14.0	21541.3	185.5	.7	10121.4	119.8	.4	2208.2	88.5
.1	21355.8	184.1	.8	10001.6	119.2	.5	2119.7	88.2
.2	21171.7	182.9	.9	9882.4	118.8	.6	2031.5	87.9
.3	20988.8	181.6	22.0	9763.6	118.1	.7	1943.6	87.6
.4	20807.2	180.3	.1	9645.5	117.7	.8	1856.0	87.3
.5	20626.9	179.0	.2	9527.8	117.1	.9	1768.7	87.0
.6	20447.9	178.0	.3	9410.7	116.6	30.0	1681.7	86.7
.7	20269.9	176.7	.4	9294.1	116.0	.1	1595.0	86.4
.8	20093.2	175.4	.5	9178.1	115.6	.2	1508.6	86.2
.9	19917.8	174.3	.6	9062.5	115.1	.3	1422.4	85.8
15.0	19743.5	173.1	.7	8947.4	114.5	.4	1236.6	85.6
.1	19570.4	172.0	.8	8832.9	114.0	.5	1251.0	85.3
.2	19398.4	170.9	.9	8718.9	113.6	.6	1165.7	85.0
.3	19227.5	169.8	23.0	8605.3	113.0	.7	1080.7	84.7
.4	19057.7	168.6	.1	8492.3	112.6	.8	996.0	84.5
.5	18889.1	167.6	.2	8379.7	112.1	.9	911.5	84.2
.6	18721.5	166.5	.3	8267.6	111.6	31.0	827.3	83.9
.7	18555.0	165.4	.4	8156.0	111.1	.1	743.4	83.7
.8	18389.6	164.1	.5	8044.9	110.6	.2	659.7	83.4
.9	18225.5	163.7	.6	7934.3	110.2	.3	576.3	83.1
16.0	18061.8	162.4	.7	7824.1	109.7	.4	493.2	82.8
.1	17899.4	161.3	.8	7714.4	109.3	31.5	410.4	82.6
.2	17738.1	160.4	.9	7605.1	108.8	.6	327.8	82.4
.3	17577.7	159.3	24.0	7496.3	108.3	.7	245.4	82.0
.4	17418.4	158.4	.1	7388.0	107.9	.8	163.4	81.8
.5	17260.0	157.5	.2	7280.1	107.5	.9	81.6	81.6
.6	17102.5	156.5	.3	7172.6	107.0	32.0	00.0
.7	16946.0	155.6	.4	7065.6	106.6

372. Now apply the third Table, or Table for Tenths, if necessary; including two more Steps, viz. the 9th and 10th: which, being useless, in the first Example, are, for the present, omitted.

373. An Explanation of the third Table, or Table for Tenths, is, however, for the Sake of Order, here subjoined.⁠[122]

THE THIRD TABLE, OR TABLE FOR TENTHS:

Serving to compleat the 2d Table, on Expansion of the Barometer, with the Temperature of 31°.24.

1. The upper horizontal Figures shew the Number of Parts into which the Tenth of an Inch has been divided.

2. The Figures in the left vertical Column express the Height in feet, (above the imaginary Level, at 32 Inches of the Barometer,) or Expansion corresponding to a single Tenth of an Inch of Quicksilver.

3. The feet in the Place of Meeting are called tenths: thus, 90 Feet are 9 Tenths of 100 Feet.

Feet.	Parts into which the Tenth of an Inch is divided.
	1⁄10	2⁄10	3⁄10	4⁄10	5⁄10	6⁄10	7⁄10	8⁄10	9⁄10
81	8	16	24	32	40	49	57	65	73
82	8	16	25	33	41	49	57	66	74
83	8	17	25	33	41	50	58	66	75
84	8	17	25	34	42	50	59	67	76
85	8	17	25	34	42	51	59	68	76
86	9	17	26	34	43	52	60	69	77
87	9	17	26	35	43	52	61	70	78
88	9	18	26	35	44	53	62	70	79
89	9	18	27	36	44	53	62	71	80
90	9	18	27	36	45	54	63	72	81
91	9	18	27	36	45	55	64	73	82
92	9	18	28	37	46	55	64	74	83
93	9	19	28	37	46	56	65	74	84
94	9	19	28	38	47	56	66	75	85
95	9	19	28	38	47	57	66	76	85
96	10	19	29	38	48	58	67	77	86
97	10	19	29	39	48	58	68	78	87
98	10	20	29	39	49	59	69	78	88
99	10	20	30	40	49	59	69	79	89
100	10	20	30	40	50	60	70	80	90
101	10	20	30	40	50	61	71	81	91
102	10	20	31	41	51	61	71	82	92
103	10	21	31	41	51	62	72	82	93
104	10	21	31	42	52	62	73	83	94
105	10	21	31	42	52	63	73	84	94
106	11	21	32	42	53	64	74	85	95
107	11	21	32	43	53	64	75	86	96
108	11	22	32	43	54	65	76	86	97
109	11	22	33	44	54	65	76	87	98
110	11	22	33	44	55	66	77	88	99
111	11	22	33	44	55	67	78	89	100
112	11	22	34	45	56	67	78	90	101
113	11	23	34	45	56	68	79	90	102
114	11	23	34	46	57	68	80	91	103
115	11	23	34	46	57	69	80	92	103
116	12	23	35	46	58	70	81	93	104
117	12	23	35	47	58	70	82	94	105
118	12	24	35	47	59	71	83	94	106
119	12	24	36	48	59	71	83	95	107
120	12	24	36	48	60	72	84	96	108
121	12	24	36	48	60	73	85	97	109
122	12	24	37	49	61	73	85	98	110
123	12	25	37	49	61	74	86	98	111
124	12	25	37	50	62	74	87	99	112
125	12	25	37	50	62	75	87	100	112
126	13	25	38	50	63	76	88	101	113
127	13	25	38	51	63	76	89	102	114
128	13	26	38	51	64	77	90	102	113
129	13	26	39	52	64	77	90	103	116
130	13	26	39	52	65	78	91	104	117

END OF THE SECOND STAGE.

374. The Ends proposed in the third and last Stage of the Work, are, first, to add the general Temperatures of the Air, or detached Air-Thermometers, at each Place of Observation above and below, into one Sum.

Secondly, to divide that Sum: each Moiety of which is called the mean Temperature of the Air.