REPORT OF DEPARTMENT OF MINERALOGY. 225 



ill Survey Bulletiu Xo. 9. lu these uotes I have described a number 

 of interesting minerals from A'arious new localities, partly representing 

 Museum material and partly the iield collections of the Survey. The 

 most notable item in the series, i)orhaps, is the account of pectolite from 

 Alaska, which so closely simulates jade as to have been mistaken for 

 the latter mineral. The laboratory is now reorganized in the northeast 

 pavilion, where, with eight associates and laborers, I supervise the 

 chemical and physical work of the Survey. 



In conclusion I must express my indebtedness to my colleague, Mr. 

 W. S. Yeates, ui)on whom has fallen most of the severer labor of 

 arranging and classifying the mineral collection. Ensigns O. G. Dodge, 

 Ernest Wilkinson and H. S. Knapp, of the U. S. Navj', have also ren- 

 dered valuable assistance, and so, too, has Mr. J. H. Brown. Each of 

 these gentlemen deserves much greater credit than can be fairly given 

 in these necessarily brief lines. 



S. Mis. 33, pt. 2 15 



