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there in 189 1. It is a very remarkable fact, this recent development in 

 a well-known and traveled part of Colorado, within a stone's throw of 

 what has been a much frequented summer resort for years. It is a fact 

 of hopeful suggestion in relation to future discoveries of ore deposits 

 in this country ; but it is a fact also liable to much abuse by promoters 

 as a warrant for the conclusion that gold ores may be found anywhere. 

 It is likewise remarkable that the productive area is included within a 

 district of only six miles square, the area of one township, and, further, 

 as the map shows, a considerable part of this is unproductive ground. 

 The surprising growth of the camp is illustrated by the fact that from 

 an output of only a few thousand tons in 1891, the production increased 

 in the years 1892, 1893, and 1894 to a total variously estimated at from 

 $5,500,000 to $7,000,000. Since that time the growth has continued, 

 and a conservative estimate for the year 1896, kindly furnished by Mr. 

 T. A. Rickard, the geologist for the state, places the value of the pro- 

 duction at $9,000,000, and others who are well posted estimate it 

 between $8,000,000 and $9,000,000. During 1895 the value of the 

 output was in the vicinity of $6,500,000. The total for the five years 

 is thus about $22,000,000, or a little less than one-half of the present 

 annual output of gold for the whole country. 



It is to be regretted that more space could not have been given in 

 the report to the statistics of the camp. The expense of an assistant 

 for this special work would have been well repaid. The difficulty of 

 obtaining complete and exact figures is undoubtedly great, if not insur- 

 mountable ; but more could have been gathered than is contained in 

 the two paragraphs of the report, which would have given some idea of 

 the distribution of the shipments both as to time and localities. The 

 difficulty is one which is met with to a greater or less extent in all mining 

 camps of the West, and is partly due to a very natural desire of mine 

 operators not to make their private business public property, especially 

 where no unanimity of action can be secured. Yet such facts are 

 highly valued by mining men and the public and are valuable guides 

 to investors. The gathering of complete statistics would do much 

 towards placing mining on a sound basis. Public effort could well be 

 exerted in this direction and provision made for the collection of such 

 statistics by judicious legislation. 



Chapter III is devoted to the ores of the camp, or more precisely 

 to the minerals of the ore deposits. As Dr. Penrose says in his sum- 

 mary, the ores consist of the country rock, more or less completely 



