mately connected with our own work. Lest, however, misapprehensions 

 should arise, I will slate that for absences of this kind there is no charge 

 made to the State, either for salary or expenses incurred. 



Having in the preceding pages given a summary of our movements 

 during the past two years, enumerating the times and specifying the 

 localities where the principal parties were at work, I will proceed to 

 state what progress has been made in each department, necessarily with 

 much brevity, following the order of the scheme of our work as given 

 above. 



1. TOPOGRAPHY AND MAPS. 



By far the largest amount of expenditure has been durjng the past 

 two years in this department of the survey. The reasons for this were 

 twofold. First By the resignation of Professor Brewer, who left our 

 work to take a chair in Yale College, and by the sickness and resigna 

 tion of Mr. Esmond,* I had been deprived of my principal geological 

 assistants, and the appropriation was too small to enable me to engage 

 others without dismissing a part of the topographical staff. But the 

 gentlemen employed in this department were engaged on work already 

 commenced, and with which they alone were familiar; hence they could 

 not be dismissed without entirely breaking up the topographical work, 

 and allowing a large amount of valuable material to be utterly lost. 

 Second The want of any even approximately correct maps of any part 

 of the State, made it entirely impossible for us to work out the detailed 

 geology without first preparing such maps as we needed. We could 

 neither lay down the placer mines nor the quartz veins, nor indicate the 

 different strata cropping out on the surface, or make our descriptions of 

 the geological structure of the country intelligible in any other than the 

 most general way, without having an accurate geographical basis for our 

 work. Properly, our work should be carried on pari passu in both the 

 geographical and geological departments; but, if means are only pro 

 vided for one, the former must have the precedence, and be completed 

 first. 



The general plan of our topographical work embraces maps on four 

 different scales. The largest is that of a mile to two inches; this is 

 reserved for the most iaiportant mining districts, where the special illus 

 tration of the occurrence of veins or mineral deposits makes a large 

 scale necessary. The next is two miles to an inch; this is the scale of 

 the Bay Map and of the County Maps in progress, as will, be noticed 

 further on. The next is six miles to an inch ; this scale is adopted for 

 the Central California Map; and finally, a scale of ten or twelve miles to 

 an inch will have to be adopted for a general map of the State, if we 

 ever are able to compile one from our materials. I did, in former years, 



-Mr. Remond left the survey early in eighteen hundred and sixty-six, being completely broken 

 down in health constitutional tendencies to disease of the lungs having been aggravated and 

 hastened towards a fatal termination by his arduous exertions and devotion to the work in which 

 he was engaged. He removed to Santiago, Chile, in the hope that the climate of that country 

 might exercise a beneficial influence on his health. It was too late, however ; the hand of death 

 was on him, and he returned to California, after a little more than a year's absence, living only 

 a few days after landing in San Francisco. He died at the early age of twenty-nine, May thirty- 

 first, eighteen hundred and sixty-seven. He was an enthusiastic lover of the natural sciences 

 with remarkable perceptive powers, and full of energy and perseverance. Had his life been 

 spared, he would have risen to an eminent position in his favorite departments of geology and 

 palaeontology. His valuable work in connection with our survey, and especially that carried on 

 by him under the greatest difficulties in Northern Mexico, will entitle him to be ranked among 

 those who have done much to aid the cause of science on the Pacific coast. 



