INDUSTRIAL PROGRESS DURING THE YEAR 1875. xcvii 



has continued his investigations of the vermiculites, alluded 

 to in the last volume of the Annual Record, and has de- 

 scribed two new varieties, which throw light on the compo- 

 sition of the group. 



Other important memoirs have been contributed by Mas- 

 kelyne in England, Yom Rath, Websky, Von Zepharovich, 

 and others, in Germany ; these are to be found in the vari- 

 ous journals, but it would be out of place to refer to them 

 here. 



A variety of new mineral localities have been opened in 

 this country, which in future may be expected to produce 

 fine specimens. Perhaps the most remarkable discovery is 

 that of the very rare species samarskite, in large quantities 

 in North Carolina. Hitherto it has been known only in 

 small imbedded fragments, but now it has been found in 

 large masses : one obtained by Mr. J. Willcox weighed 

 about twenty pounds, and a second thirteen pounds. An- 

 other interesting locality is that of Pike's Peak, Colorado, 

 which has recently afforded crystals of smoky quartz, rival- 

 ing those of the Alps, and also very beautiful crystals of 

 a bluish -green feldspar (Amazon stone). The chondrodite 

 locality, at Brewster, N". Y., has produced some fine speci- 

 mens, and the crystals have been shown to be quite unique 

 in the complexity of their forms. 



One of the most valuable additions to the list of minera- 

 logical books is the volume by Dr.Genth,on the mineralogy 

 of the State of Pennsylvania. It includes descriptions of 

 the various mineral localities in the state, with the results of 

 extensive chemical work by the author. Another important 

 publication is the continuation of the mineralogy of Russia 

 by Kokscharow, containing the results of much crystallo- 

 graphic research. Still another work is that completing the 

 series of Hessenberg's " Mineralogical Notices," published 

 after the death of the author, whose loss is a great one for 

 the science. 



The following is a list of the new minerals recently intro- 

 duced into the science ; those from American localities are 

 mentioned in a little more detail than the others : 



JByerite is a new variety of bituminous coal, described by 

 Mallet as occurring in the Middle Park, Colorado. It is re- 

 markable in yielding a large amount of gas and tarry oil. 



5 



