Report of a Mission to Yarkund in 1873 : vol.1 / Page 431 (Color Image)

0431	Report of a Mission to Yarkund in 1873 : vol.1

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to YARKAND viâ Chang-Chenmo and Shâhidûlla.

Double altitudes or zenith distances corrected for index and level errors.			ELEMENTS USED IN COMPUTATION OF REFRACTION.				DEDUCED LATITIIDES.
			Baro- meter.	Ther. Faht.	By stars north of zenith.			By sun or stars south of zenith.			Final latitudes north.
o	I	//	Inches.	Degrees.	o		i	o	►	n	o	I	U
Z. D. 30	47	40	15.8	44				34	4	49	34	4	49
D. A. 51	27	20	18.2	51				34	0	1
„ 129	5	10	18.2	51				33	59	55
51	27	0	18.2	51				34	0	12
„ 114	38	20	18.2	51				34	0	23
Z. D. 32	17	12	18.0	61				33	59	57	34	0	6
D. A. 51	17	20	17.6	33				34	5	4
70 »	55	50	17.6	33	34	5	6
128	55	40	17.6	33				34	4	40	34	4	59
D. A. 128	24	10	17.0	44				34	20	24
» 50	47	10	17.0	44				34	20	4
128	23	0	17.0	44				34	21	1
,, 50	41	40	170	44				34	22	49
71	27	30	17.0	44	34	21	1				34	21	4
D. A. 128	7	0	16.3	44				34	28	59
„ 94	21	10	16.3	44				34	29	13	34	29	6
D. A. 127	55	53						34	34	33
„ 71	56	33	,,		34	35	32				34	35	3
D. A. 127	29	33						34	47	45
» 72	23	13	»		34	48	51
93	47	23						34	46	10	34	47	54
D. A. 126	32	43						35	16	9
„ 73	19	43		,,	35	17	9				35	16	39

REMARKS.

I In observations with the sextant the stars have been invariably taken on the meridian. In observations with the theodolite the stars have been taken on the meridian except where an asterisk has been affixed to the name of the star (in column 6). Where this occurs the numbers in the column of Remarks are the computed means of the true local times of observation used in the computa-

tion for latitude. The
numbers in brackets in columns 7, 10, and 11, denote the number of pairs (face left and face right) of observations taken. The corresponding figures in column 7 give the corrected mean zenith distance.

The theodolite employed is described in the Geographical Appendix, Section B.

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National Institute of Informatics - Digital Silk Road Project
Digital Archive of Toyo Bunko Rare Books