Ptolemy's Tetrabiblos

by Ptolemy

Table of Latitudes, as Shown by the
Duration of the Longest Day

[From the Almagest.]

LONGEST DAY.		LATITUDE.
H.	M.	D.	M.
12	0	0	0
12	15	4	15
12	30	8	25
12	45	12	30
13	0	16	27
13	15	20	14
13	30	23	51
13	45	27	40
14	0	[292]30	22
14	15	33	18
14	30	36	0
14	45	38	35
15	0	40	56
15	15	43	5
15	30	45	1
15	45	46	51
16	0	48	32
16	15	50	15
16	30	[293]51	35
16	45	52	50
17	0	54	1
17	15	55	0
17	30	56	0
17	45	57	0
18	0	58	0
18	30	59	30
19	0	61	0
19	30	62	0
20	0	63	0
21	0	64	30
22	0	65	30
23	0	66	0
24	0	66	10

Extract from the Table of Ascension
(Contained in the Almagest),
Calculated for every Tenth Degree
of the Zodiac.

SIGNS	Tenth Degree	In a Right Sphere under the Equator, Diurnal Arc 12 Hours.		3rd Climate, thro’ Lower Ægypt, Lat. 30° 22′ N. Diurnal Arc 14 Hours.		8th Climate thro’ Southern Britain, Lat. 51° 30′ N. Diurnal Arc 16 Hs. 20 Mts.
		Times of Ascen.	Aggregate Times.	Times of Ascen.	Aggregate Times.	Times of Ascen.	Aggregate Times.
		D.	M.	D.	M.	D.	M.
Aries	10	9.10	9.10	6.48	6.48	4.05	4.05
	20	9.15	18.25	6.55	13.43	4.12	8.17
	30	9.25	27.50	7.10	20.53	4.31	12.48
Taurus	10	9.40	37.30	7.33	28.26	4.56	17.44
	20	9.58	47.28	8.02	36.28	5.34	23.18
	30	10.16	57.44	8.37	45.05	6.25	29.43
Gemini	10	10.34	68.18	9.17	54.22	7.29	37.12
	20	10.47	79.05	10.00	64.22	8.49	46.01
	30	10.55	90.00	10.38	75.00	10.14	56.15
Cancer	10	10.55	100.55	11.12	86.12	11.36	67.51
	20	10.47	111.42	11.34	97.46	12.45	80.36
	30	10.34	122.16	11.51	109.37	13.39	94.15
Leo	10	10.16	132.32	11.55	121.32	14.07	108.22
	20	9.58	142.30	11.54	133.26	14.22	122.44
	30	9.40	152.10	11.47	145.13	14.24	137.08
Virgo	10	9.25	161.35	11.40	156.53	14.19	151.27
	20	9.15	170.50	11.35	168.28	14.16	165.45
	30	9.10	180.00	11.32	180.00	14.15	180.00
Libra	10	9.10	189.10	11.32	191.32	14.15	194.15
	20	9.15	198.25	11.35	203.07	14.18	208.33
	30	9.25	207.50	11.40	214.47	14.19	222.52
Scorpio	10	9.40	217.30	11.47	226.34	14.24	237.16
	20	9.58	227.28	11.54	238.28	14.22	251.38
	30	10.16	237.44	11.55	250.23	14.07	265.45
Sagittarius	10	10.34	248.18	11.51	262.14	13.39	279.24
	20	10.47	269.05	11.34	273.48	12.45	292.09
	30	10.55	270.00	11.12	285.00	11.36	303.45
Capricornus	10	10.55	280.55	10.38	295.38	10.14	313.59
	20	10.47	291.42	10.00	305.38	8.49	322.48
	30	10.34	302.16	9.17	314.55	7.29	330.17
Aquarius	10	10.16	312.32	8.37	323.32	6.25	336.42
	20	9.58	322.30	8.02	331.34	5.34	342.16
	30	9.40	332.10	7.33	339.07	4.56	347.12
Pisces	10	9.25	341.35	7.10	346.17	4.31	351.43
	20	9.15	350.50	6.55	353.12	4.12	355.55
	30	9.10	360.00	6.48	360.00	4.05	360.00

NO. III
THE CENTILOQUY,
OR
HUNDRED APHORISMS OF CLAUDIUS PTOLEMY[294];
OTHERWISE CALLED,
THE FRUIT OF HIS FOUR BOOKS

I. Judgment must be regulated by thyself, as well as by the science; for it is not possible that particular forms of events should be declared by any person, however scientific; since the understanding conceives only a certain general idea of some sensible event, and not its particular form. It is, therefore, necessary for him who practices herein to adopt inference. They only who are inspired by the deity can predict particulars.

II. When an enquirer shall make mature search into an expected event, there will be found no material difference between the event itself and his idea of it.

III. Whosoever may be adapted to any particular event or pursuit, will assuredly have the star indicative thereof very potent in his nativity.

IV. A mind apt in knowledge will discover truth more readily than one practised in the highest branches of science.