72 DO^UTIOl^^s. 



Liverpool. Proceedings of the Literary and Philosophical Society of 

 Liverpool. 57th Session, 1868-69. No. 23 ; and 58th Session, 

 1869-70. No. 24. 



London, Edinburgh, and Dublin Philosophical Magazine. Pourth 

 Series. Yol.xlii. Nos. 277-279. July to September 1871. From 

 Dr. W. Francis, F.G.8. 



J. H. Pratt. — On Mr. Hopkins's Method of deterniimug the Thickness 



of the Earth's Crust, 98. 

 H. Moseley. — On the Mechanical Impossibility of the Descent of 



Glaciers by their Weight only, 138. 



Longman's Notes on Books. Yol. iv. No. 66. August 1871. 



Monthly Microscopical Journal. Yol. vi. Nos. 31-33. July to 

 September 1871. 



A. Ernst and H. J. Slack. — Diatomaceous Earth from the Lake of 



Yalencia, Caracas, 69, 

 H. J. Slack. — The Silicious Deposit in Pinnularise, 71. 

 J. W. Dawson. — On Spore-cases in Coals, 90. 



Munich. Sitzimgsberichte der konigl.-bayer. Akademie der Wissen- 

 schaften zu Miinchen. Mathematisch-physikalischen Classe. 

 1870. Band ii. Hefte 3 & 4. 



. . . 1871. Bandi. Heft 1. 



Nature (Journal). Yol. iv. Nos. 86-100. June to September 

 1871. 



J. H. Pratt, Mr, Hopkins, and M. Delaunay. — The Thickness of the 

 Earth's Crust, 141. 



Earthquake in China, 145. 



J. H. Dana. — On the supposed Legs of the Trilobite Asaphus j^^aty- 

 ceijliahis, 162. 



J. K. Laughton.— Ocean Currents, 162, 223. 



P. Dawson. — Hydrous Silicates injecting the pores of Fossils, 162. 



H. Hennessy, — The Internal Structure of the Earth, 182, 



W, B. Carpenter and R. A. Proctor. — Ocean Circulation, 183, 



J. Hector. — On Recent il!fb«-Remains in New Zealand, 184, 228. 



"W. Boyd Dawkins. — The Date of the Interment in the Aurignac 

 Cave, 208. 



M. H. Johnson. — Formation of Flints, 223. 



"W. M. Williams. — Papers on Iron and Steel, 226. 



R. A. Proctor. — Ocean Currents, 243. 



Formation of Flints, 243. 



J. Croll. — Ocean Currents, 304. 



. On the Age of the Earth as determined from Tidal Retar- 

 dation, 323. 



J. H. Pratt.— Thickness of the Earth's Crust, 344. 



Thickness of the Earth's Crust, 366. 



A. H. Green.— Thickness of the Crust of the Earth, 383. 



E. A. Pankhurst. — The Earthquake at Worthing, 385. 



J. B. Pow.— A Fossihferous Boulder, 386. 



R. Thomson. — Earthquake in Jamaica, 387. 



W. Boyd Dawkins. — On Fresh Discoveries of Platycnemic Men in 

 Denbighshire, 388. 



