50 [May 15, 



Bache.] 



is also exposed between .he road and the railroad for 10 feet more making 



the bed at least 45 feet broad ; the highest point of rock exposed 1 



feet above the level of the county road. 



The dip of the feldspar bed is northward (40) beneath the gne.ss 

 The direction of the feldspar bed does not conform to the stnke of the 



l,el,s of gneiss, but, on the contrary, is transverse, i. e., nearly north 



feldspar i, orthoclase, of light pink color, with - occasional 

 streak of white granular quartz running through it. Some of the large 

 asses quarried out contain considerable quartz. Large masses of b,o- 

 me mica are occasionally met with in quarrying ; but the occurrence of 



on and sold to the potteries at Trenton, etc. It is the only Jeldspa 

 quarry in Montgomery county. The quarry m Delaware county 

 Sed in the Innual Eeport of the Geological Survey f PennsyKan a 

 for 1886 A few others, in the States of Delaware, New York, Connec 

 It Massachusetts and Maine furnish all the feldspar ac^red 

 into pottery in the United States, the total production from all the quarry, 

 ,rom 1888 to 1887, having been 14,000; 14.10C >i- 9 ' ' "' '. 

 10 200 tons valued respectively at $70,000; $71,112 ; 5o,H2 , $68,00 

 *?4 500 $56100 The crude feldspar is valued at the Trenton potter.es 

 $ j a'bom $5 the long ton ; and the pulverized feldspar at $11 ; the quartz 

 being carefully separated out. 



A Fragment of Objectionable University S xtension Teaching. 



By E. Meade Bache. 

 (Read before the American Philosophical Society, May 15, 1S91.) 



It need hardly be said, and yet, to obviate the possibility of 

 misinterpretation in outside quarters of that which I am ab 

 to remark, it becomes necessary formally to declare that 

 no intention to depreciate the cause represented by the well-cc 

 certed effort of University-Extension teaching to /a * 

 knowledge heretofore confined to the comparatively few. ] iW 



heartily wish that my theme admitted of no mention save 

 generalities, but thus treated it wonld not subserve the interest 

 which I wonld gladly promote, by being brought home 



