The Cordova daily times., 1921-11-15
NEW OUTLINE
 MAP ALASKA
 IS COMPLETED

Tn" U. s. coast and gcodetic survey l of the Department of Commerce. re- ports the completion of a new outline map of Alaska on the Lambert conror. maj Conic projection. scale ,OOO 900 dimensions 17x2Gia in. price 9 cents.
 The map extends from the Arctic Ocean in the north to the Gti,a of Washington in the south. and includes all of the Aleutian Islands and a part of Eastern Siberia It is intended as base map to which may bo added any kind of special information that may be desired. For this reason. only national boundaries. the adjacent Canadian provinces and the names of few of the important towns are given. The shorelinn is complied from the most recent coast and geo. do'tr survey chart. ad in respect to southeast Alaska and westward to Kodiak Island. tn. .1s-uu" is bet. ter represented than heretofore. The accumulation of the yearly surveys in the extensive and largely uusur. yoy"d waters of Alaako ae here cm- bodied present a doIiucation of the coastlino in more really true sharc than heretofore and in this rosrcc, the map is more reliable than other exist ing maps of similar scale.
 In addition to this feature. the cm- ploymcnt of a more suitable system of map projection adds to the general ac. curacy On account of the prcdomi- mating east and west extent of Alas ka. the Lambert conformal comic pro- jection with two standard parallels offers advantages over other projcC- tions formerly used in mapping this re zion This is the system which came to prominent notice during the World war and was employed by the allied forces in their military operations in France.
 The parallels employed as standards are the latitude 55 degrees and 65 de grees, and along these parallels the scale is true. Between these paral- lels the scale becomes too small by less than four-tenths of one per cent, which amount is insignificant. At Dixon entrance in Southeast Alaska. the former general chart on a poly comic projection was in error by as much as ten per cent, due to a sys- tenn of projection which was unsuited tu the shape of the area involved. In the new base map, the projection error in this locality is entirely eliminated The maNjmm error of scale of the Lambert projection k only l.ai per cent. This is in the latitude of Point Barrow in thc north where tho sc,l" is too large hy this amount The s1me amount ui error appears in "ti- tud. IS degrees but ta;s ]. cras.'.E. ably south of Alaska which is h." subject of the map. The polEeonic pro. runie projection had the effect of oN- ugs.ra,u- areas in the most mporf- onr pert n NrsNa whereas in the Lambert projection the maximum scale error is placed in the least i'm portant part of Alaska. and in amount is only one.sixth as large as in the polyconic projection.
 For the measurement of distances and areas within the extent of the map. an accuracy is thus obtained that is well within the limits of draftsman- ship paper distortion. and our knowl- edge of this region as a whole
 The selection of a suitable projec- tion with conformal grid system of one degree units, makes the uew out line map a convenient base for the addition of special and useful informa- ton. The inclusion of the northwest part of the state of Washington serves as a connectin link with a similar Lam bert conformal base map of the Emit ed States which mas already been pnb- Hshcd on the same scale.