SCIENTIFIC SURVEY. 425 



Machias. It appears auriferous, but we have not been able yet to 

 have it tested. Another large mass of beautiful pyrites occurs in 

 Calais, upon the river, which we would recommend to those inter- 

 ested to have assayed for gold. Oftentimes the auriferous pyrites 

 is more valuable than the quartz. 



Tin. 



No additional discoveries of tin ore have been made the past sea- 

 son. A visit was made to the vein upon Mt. Mica, but no more 

 masses of the ore have been foun^. Small crystals of the oxide 

 sometimes are picked up. We suggested the examination of the 

 gangue of the vein for tin. Mr. Goodale has assayed some of the 

 specimens, in which he found a very small per cent, of tin, but not 

 enough to pay for working. Quite a large excavation has been 

 made in the rock, but this has beeij done entirely by mineralogists, 

 who find here many beautiful minerals. 



The agent of a mining company has since visited the locality, 

 and has leased the property for ninety-nine years. Doubtless it 

 will now be thoroughly explored, and the value of the gangue for 

 ore soon be made known to the public. 



Dr. Ilolmes informs me that he obtained a piece of what he now 

 supposes to be tin ore from Paris, forty years ago, when the local- 

 ity was first discovered. The catalogue of minerals will show one 

 or two other localities of tin ore in Oxford county, which we hope 

 will also be carefully examined by all who are interested in them. 



Antimony. 



A very remarkable vein of the sulphuret of antimony has recently 

 been opened in Prince William, New Brunswick. It is not a great 

 distance from the Maine boundary ; and the rock is the same mica 

 schist which contains the gold. Hence we should not be surprised 

 to learn of the discovery ©f similar veins in Maine. 



But we learn from Surgeon General Hamlin, U. S. A., that m 

 the eastern part of the State there is a valuable bed of this ore 

 known to him. We hope its quality and quantity may soon be 

 made known to the public. 



Lead. 

 A new lead mine has been opened the past season (1862) on 

 Denbo Point, Lubec. We give here a letter relating to it from 

 54 



