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s<5ale of ten or twelve miles to the inch, which will give us a map 

 about five feet square, and as large a one as can conveniently be 

 used for a wall map for schools and for the people at large. For the 

 central portion of the State we take a scale of six miles to the inch, 

 which gives' us four times the area* of the other. This central map 

 embraces, only one-third the area of the State, but it includes over 

 ninety per cent, of the population. This map is well .under way, the 

 field-work being about four-fifths and the drawing one-half done. It 

 can be completed entirely in the next two years, with a reasonable 

 appropriation, and when done will be the largest inland piece of 

 mapTWork yet undertaken in the country, as it will give the details of 

 the topography of 80,000 square miles of territory an area nearly 

 twice that of Ohio. The same scale is adopted for the Coast Ranges 

 south of Monterey as far as Los Angeles, and this ma'p is about two- 

 thirds completed. 



For the most thickly settled parts of the State we have adopted a 

 much larger scale, of two miles to an inch namely, giving an area of 

 nine times that of the last mentioned map for the same territory. 

 Of the work done on this scale you have before you a sample, which 

 will render it unnecessary for me to go into any details in regard to 

 it, and which will enable every man to judge for himself of the value 

 of the survey maps. The one in question is the Map of the Vicinity 

 of the Bay of San Francisco, of which a large supply is now on the 

 way from New York, in different styles of mounting. 



Of the belt of mining counties along the Sierra Nevada, three 

 maps on this scale are in preparation : one, that of Plumas and 

 Sierra, is done as to the field-work, and the drawing of it will be 

 completed during the winter, so that it can be engraved next summer 

 if our work goes on. The central counties, from Nevada to Cala- 

 veras, are also well under way, and the southern begun ; the rate of 

 progress will depend, of course, on the amount of funds provided by 

 this Legislature for the continuance of our work. 



According to my calculations the whole of the map-work can be 

 completed in four years, if pushed with vigor, and I consider that, 

 taking all things into consideration, it may be considered now as 

 nearly half done. The question, therefore, before you is, not whether 

 a topographical survey of the State shall be made ; but whether, one 

 having been commenced on the authority of one and continued on 

 that of four successive Legislatures until nearly half done, it shall be 

 abandoned just as its results are beginning to be laid before the 

 people. 



