826 [Assembly 



crude material miglit be advantageously formed into dairy vessels ; 

 as glassware for that purpose is coming very much in request, 

 and is esteemed of the highest utility. I conjecture it may be ap- 

 propriated to still higher uses. I am able to stat*^ that the intel- 

 ligent and enterprising proprietors of the furnace have determin- 

 ed to pursue their investigation, and I have entire confidence that 

 their experiments will result in the institution of a new and va- 

 luable manufacture. 



The Phosphate Mine. — The subject of the phosphate of lime has 

 been sufficiently discussed in the 'mineralogical section of this 

 report. The ultimate success of constituting this substance an 

 important article of exportation is yet to be decided. The 

 development of copper in this mine and in the other adjacent 

 veins, is strongly indicative of the existence of copper lodes, as 

 favorable in their extent as they have been ascertained by analy- 

 sis to be in the purity of the ore. 



Lime. — The immense quarries of limestone disseminated through- 

 out the country, pronounced by Professor Salisbury so rare and 

 valuable in their combinations with other substances, must afford 

 profitable sources of business, when adequate facilities for the 

 exportation of their products shall exist. Many of these lime- 

 stone deposits are regarded by Professor as Salisbury not only use- 

 ful for mechanical purposes, but his analysis presents the pre- 

 sence of components which may render the lime of Essex county 

 a prominent article of exportation as an agricultural fertilizer. 

 The experiments with this material to which I have adverted, 

 tend to the same practical conclusions. 



IRON ORE. 



I A remarkable, and to the public generally, novel feature in 

 the industrial capacity of this county, is exhibited in the fact that 

 a large amount of crude iron ore is annually exported from 

 its mines to be used in the works of Pittsburgh and other locali- 

 ties in the midst of the ore beds of Pennsylvania, Ohio, and New- 

 Jersey. The ores of Essex county doubtless possess properties 

 which improve by amalgamation the quality of the iron of those 

 states. 



