COLLECTIONS IN ECONOMIC GEOLOGY AND METALLURGY. 123 



(1) Inipmo inagnt^titf. l'.-.,ncst Mine. Felmiary 10, 1880. (40t>:?7.) 

 (J) I.iipiuc inaj;iict,ite. Kishpangli Miiio. February Ti, 1880. (41440.) 

 (:<) Magnetite. Ki.slii)augli Mine. February 1"2, 1880, (41441.) 

 (4) Magnetite. Kishpungh Mine. February 12, 1880. (40G07.) 



IIUNTEKDOX COITXTY. 



Six specimens represent the Hayer Mine at Holland, taken May 4, 



1«8() : 

 (1) Magnetite, surface specimen. (41490.) 



{■>) Magnetite, (leconiposetl products, surface specimen. (41487.) 

 (:i) Magnetite, surface specimen. (41491.) 



(4) Magnetite, granular, surface specimen. (41488.) 



(5) Magnetite, surface specimen. (41492.) 



(0) Magnetite, surface specimen. (41489.) 



(1) Magnetite, quartz, decomposition'products. Gray's Mine, Ltdjanon. May 3, 



1880. (406.53.) 



(2) Magnetite, pyrrhotite, quartz, decomposition products. Gray's Mine, Lebanon. 



May 3, 1880. (40605.) 



(3) Decomposed magnetite, and quartz, surface specimen. Gray's Mine, Lebanon. 



May 3, 1880. (40036.) 



PENXS YL VA NIA . 



LEHIGH COUNTY. 



Four specimens represent the Balliet Brothers Mine, at Whitehall, 

 taken October 19, 1881 : 



(1) Limouite. (40692.) 



(2) Impure limouite, liver ore. (40700.) 



(3) Limonite, commonly called i)ipe ore. (40697.) 



(4) Limonite. (40703.) 



BERKS COUNTY. 



Ten specimens represent the Warwick mine at Boyerstown, taken 

 July 2, 1881 : 



(1) Magnetite, and calcite coutainiog pyrite. (41884.) 



(2) Magnetite, pyrite crystallized, calcite crystallized. (41885.) 



(3) Calcite, pyrite. (41886.) 



(4) Decomposed epidote rock. (43700.) 



(5) Rock. (43699.) 



(6) Chloritic rock, from npper level. (43698.) 



(7) Rock, hanging wall of upper vein. (43595.) 



(8) Chloritic rock, from bottom of shaft. (43594.) 



(9) Argillaceous rock, from lower level. (40676.) 



(10) Selvage between ore and hanging wall, bottom level. (43697.) 



Seven specimens represent the Fritz Island Mine, near Reading; 

 taken Jnae 24, 1881 : 



(1) Magnetite, pyrite, and calcite. (41877.) 



(2) Magnetite, containing much pyrite. (41878.) 



(3) Impure magnetite. (41879.) 



(4) Foot wall. (41880.) 



(5) Hanging wall. (41881.) 



(6) Hanging wall. (41882.) 



(7) Rock, from bet. veen the ore bodies. (41883.) 



