JAMES SWIFT & SON V^ 



Makers of the highest grade Microscopes 

 and Accessories for Petrological Research 



Jtist out 



NEW ILLUSTRATED CATALOGUE 



OF 



PETROLOGICAL MICROSCOPES 



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 A copy will be sent gratis on request. 



University Optical Works 

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Publications to be had of the Geological Society, 

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QUARTERLY JOURNAL (Vols. Ill to LXXVII, inclusive). Price to 

 Fellows, £1 Os. Od. each : £1 5s. Od. in cloth. [Postage Is.] Separate parts (2, 5, 

 7, 9, 55, & 273 are out of print) 7s. 6d. each : price to Fellows 6s. [Postage 5d.'] 



GENERAL INDEX TO THE FIRST FIFTY VOLUMES OF THE 

 QUARTERLY JOURNAL (1845-1894). Part I (A-La). Part II (La-Z). 

 Price 7s. 6d. each. To Fellows 5s. each. [Postage 6d. each.] 



GEOLOGICAL LITERATURE added to the Geological Society's Library 

 during the years ended December 31st, 1894-1913 and 1920. Price 5s. each. To 

 Fellows, 3s. 9d. each. [Postage 7d.'] (Nos. 8 & 14 are out of print.) 



THE HISTORY OF THE GEOLOGICAL SOCIETY OF LONDON, 



by H. B. WodDWAUD, F.R.S. Price 3s. net. [Postage Is.] 



THE CENTENARY OF THE GEOLOGICAL SOCIETY OP 

 LONDON, recorded by W. W. Watts, F.R.S. Price 2s. . [Postage 5d.] 



HUTTON'S 'THEORY OF THE EARTH/ Vol. Ill, edited by Sir 

 Archibald Geikie, D.C.L., F.E.S Price 3s. 6(Z. To Fellows, 2s. [Postage 9d.] 



THE GEOLOGY OF NEW ZEALAND. Translated by Dr. C. F. 

 Fischer from the works of MM. Hochstettee & Petebmanw. With an Atlas of 

 Six Maps. Price 10s. net. [Postage 9d.] 



