Observations on Lead Ores. 17-3 



I have now, I believe, repeated to you the principal facts 

 I mentioned this morning. If they afford you any amuse- 

 ment I shall be highly gratified. 

 I am, dear Sir, 

 Your obliged and obedient friend and servant, 



THOMAS JARMAN. 



Art. XXIV. — JVotice of an argentiferous galena, from 

 Huntington, and of another Lead Ore from Bethlem, Conn, 

 with miscellaneous observations on Lead Ores-— the lat- 

 ter extracted chiefly from authors. — Editor. 



The localities of galena, within the territory of the Uni- 

 ted States are very numerous. 



We have published but a very small part, of those that 

 have come to our knowledge, chiefly because the quantities 

 discovered, have been in most instances, too small to make 

 it an object to prosecute the research ; and still, when we 

 remember that the first hint of the existence of a valuable 

 mine may arise from the occurrence of a minute quantity of 

 ore, it is obvious that all such facts ought to be preserved, 

 either in public or private documents. 



In Dr. Bruce's Journal, (pa. 65,) some account is given 

 of the valuable and interesting lead mines near Northamp- 

 ton in Massachusetts, and, in the present number of this 

 work, an abstract is given of some of the principal facts 

 stated by Mr. Schoolcraft, respecting the rich mines of Mis- 

 souri. These mines, from their richness, and from the 

 facility with which the ore is obtained, it is probable, will 

 supply the demands of this country, for ages, and if they 

 cannot entirely exclude the introduction of foreign lead, 

 there appears little probabihty that many other American 

 lead mines can enter successfully into competition with 

 them. 



We make this remark, not to discourage enterprize m 

 other places, but to produce caution, in plunging into the 

 heavy expenditures which inevitably attend mining opera- 

 tions — while the returns are always in a degree uncertain. 



But, with respect to the poorer localities of lead, there is 

 another consideration which may be worthy of attention ; it 



