TOPOGRAPHIC SURVEYS. 
15 
The above results were obtained only incidentally in the course of the 
topographic work and can not make pretense to a greater accuracy than 
about +4°. The index error of the compass was determined by occupy- 
ing the U. S. Coast and Geodetic Survey magnetic station at Tombstone, 
Arizona, in December, 1904. To the results as given above the index 
correction has already been applied. 
SUMMARY. 
The following is a summarized statement of the topographical work 
accomplished: 
Graphic triangulation by plane-table, with delineation of contours; scale 1:g0000. 
Days of plane-table work 
PRE CHELIA TI PCC omeatur isco ous Chea ci ee se sic ed se si 018 Square kilometers 7,500....square miles 
Triangulation stations occupied by plane-table 
Points intersected 
Elevations of points other than stations 
Average plane-table stations occupied per day 
MOCATEA OIIES Deri: atin jeje <adess-ciesele eta Dlaicvet = Square kilometer .30 
Stadia traverse, with plane-table and altitudes by vertical angles; scale 1:90000. 
Days of traverse 
PHISEATICEsELAVELSEG Nataten: sic via sei sisssierale seid s) Sepa ose oa Pas Kilometers 418 
PAECH SSO LCMCUMM MIM e es se als sis alepore ieee 18 +. c/e ws Square kilometers 1,040....square miles 
Stations occupied by table and rod 
Intersected points 
Elevations of points other than stations 
AW CLAVE ALCANDET GAYS cats oi 5. (os sistas a ale sia ys Oiehaie : « Square kilometers 33.33....square miles 
Hverage Gistance traversed Per Gay... cen... s ese: Kilometersai3yo7 ence Riee i 
MOCALEUY DOMES e PCR aeie <ters)cnssereiecs a ayes-a vic ls) «o/s Square kilometer 1.38... .square mile 
EEVAEIONS POtioeray a rcpeiie ac cicelealieite < o2 3. ees Square kilometer 1.36.....square mile 
Astronomical control: 
Latitudes observed 
Azimuths observed 
Traverse by boat from Shi-ts’tian-hién to Hing-an-fu 
Tables of altitudes and notes of the traverse of the Han river will be found in the Appendix 
a6 SOY Bi OR 6 8 06 be 0 8 68 tee ee Oe OE CH Oe EM RES CSO Os Dee 8 
VEL ap erat CA DEL GA Viet levee clelere aaviels/ a) © ase si Square kilometers 128.20. ..square miles 
pins square mile 
TOV ALIONS SPO! ayia csc aoa 6) us) eistainteed. oo lel vane, sve ls)s Square kilometer .28....... square mile 
mie 6 ee ni.6, 016 © 60 Oe lS 0 6/6 a @ 0.6.6. «e610 wm 06 Oe ole 4 0 66 8 (¢ 6 5) 0 e060 be 60 06 88 0s 0's 0 8 
oO. 16) Mm Wi 6.619 6: ene 66m 6s wee 4 S10 © uO ev a © bv oe 8 6 Ve Se 6 Bus Oe 6 6 8 8 0 C0 9 8 88 6 
ew ees 0 6 69 i @ (6 we Miele, by ©) 6 Pe ale 6 (0.8 8 0.8 @ 1616 6 ele )e; swab 6 2 ¢) ele 6m. 660s. 6.0.6 8 6 :6:\0 
2,900. 
103. 
A Love 
2,000. 
49.58 
s7o 
ae: 
31-5 
260. 
400. 
1,052. 
400. 
375; 
Toney 
8.25 
3.63 
3-57 
14. 
iT. 
104.5 
