— 334 — 



Shap district. — W. J. Grimshäw: On incrustation and deposits in Steam 

 Boilers. — J. Althen: On the discovery of an ancient ironmine in Clivi- 

 ger , and some* further remarks on the remains of old bloomaries in the 

 neighbourhood of Todniorden. — Walter Topping: On the method adopted 

 in sinking through quicksand at the Bamfurlong Collieries. Wigan. — 

 J. M. Mello: Notes on the more recent discoveries in the cresswell caves. 



— J. Beswick Perrin and J. Plant: On concretionary nodules of limestone, 

 and foliated mouldings, in the permian marls, near Leigh. — W. J. Grimshaw 

 and H. Phillips : On the Long Wall System of Working Coal. Part. I — III. 



— G. H. Hollingworth: A description of Messrs. Booth and Sugden's 

 Detaching Hook. — W. Watts: On the geological strata, and mode of 

 procedure in driving a tunnel at Saddleworth. - J. D. Kendall : On the 

 formation of rock basins. — A. Smith: On the Spark Tube on inflammable 

 gas indicator. — C. E. de Rance: Further notes of Triassic borings near 

 Warrington. 



17) The American Journal of Science and Arts. 3rd Series. 

 [Jb. 1881. I. — 161 — .] 



Vol. XX. No. 119. November 1880. 

 James D. Dana: Geological relations of the limestone belts of West- 

 ehester County, New-York. 359. — Alex. Agassiz: Paleontological and 

 embryological development. 375. — J. W. Dawson: Revision of the land 

 snails of the paleozoic era, with descriptions of new species. 403. — 

 W. 0. Crosby and G. H. Barton: Extension of the carboniferous formation 

 in Massachusetts. 416. — E. T. Cox: Discovery of oxyde of Antimony in 

 extensive lodes in Sonora, Mexico. 421. 



Vol. XX. No. 120. December 1880. 



J. D. Dana: Geological relations of the Limestone belts of Westchester, 

 Co., N.-Y. 450. — H. S. Williams: Abstract of some paleontological 

 studies of the life history of Spirifer laevis H. 456. 



18) Proceedings of th e mineralogical and geological Section 

 of the Academy of natural sciences of Philadelphia. 

 1877—1879. No. 1. 8°. pg. 1-93. 



H. Carvill Lewis: A new polariscope. 5; — A garnet with iuverted 

 crystallisation. 5. — Th. 0. Rand: Change of Serpentine into quartz. 5. — 

 H. Carvill Lewis: A new locality for siderite. 6; — Magnetite markings 

 in Muscovite. 6; — A new locality for Asbolite. 7. — Wm. W. Jefferis: 

 A new locality for Fluorite. 7. — H. Carvill Lewis: Epidote in Molyb- 

 denite. 7. — Th. D. Rand : A new locality for Millerite. 7. — H. Carvill 

 Lewis: The optical characters of some Micas. 8. — A. E. Foote : A new 

 locality for Analcite. 16. — H. Carvill Lewis: On the measurement of 

 plane angles. 16; — On an exfoliating Tale. 16; — Tin in N.-Carolina. 

 17. — Th. 0. Rand: A new locality for Gypsum. 17. — H. Carvill Lewis: 

 On Siderophyllite, a new mineral. 18; — On Sterlingite and Damourite. 

 20; — Vanadium in Philadelphia rocks. 20; — A new locality for Epsomite. 



