228 Sorby: Lisf of Papers and MouograpJis. 



On Unencumbered Research a Personal Experience. Endowment of 

 Kis.'arcli, pp. i4i)-i75 ( Kinjj; iV Co., London, iSj6). 



On Count Castracane's Photograph of Nobert's 19th Band Mon. Micro. 

 Journ., X\'., 1S76, p. I. 



On the Microscopical Structure of Amber. Mon. Mii 10. Journ., Xov., 



XIII., isjh, pp. -'.•5-'.v. 



On the Critical Point in the Consolidation of Grantic Rocks. Mimr. Mag-., 

 Nov., iS^f). j^ pp. 



On the Colour of the Eggs and Feathers of Birds. Sliefiicld Lit. and 



I'hil. .Soc. Rep., iSjt), ]). 19. 



On a New Form of Small Pocket Spectroscope. Monthly Mic. Jour. ,1876, 

 X\'l., pp. (14-66. 



On the Marine Biology of the Coast of Kent. \'ictoria History of the 

 Counties of lui^laiui. Kent. In t\pi-, but n(.)t \el jiiiblished. 



The Application of the Microscope to Geology, &c. Anniversary Address 

 of the President. Mon. .Micro. Journ., X\'ll., 1877 ; Marcii, 1877, p]5. 1 13-136. 



On a New Method for Determining the Index of Refraction of Minerals. 

 Presidential Address. .Miner. .Maj^., NO. (), Sept., 1877, i() jip. 



On a Simple Method of Determining the Index of Refraction of Small 

 Portions of Transparent Minerals. Miner. May;., .\o. 4, 1S77, 1 p. 



On a New Arrangement for Distinguishing the Axes of Doubly Refracting 

 Substances, Journ. Ro\al Micro. .Soc, X\"III., 1S77, pp. 209-jii. 



On some hitherto Undescribed Optical Properties of Doubly Refracting 

 Crystals (Pieliminary Notice). Proceed. Royal Soc, No. 1S3, 1S77, 1 \\\>. 



On the Limit of the Power of the Microscope, compared with the Size of 

 tlie ultimate Molecules of Organic and Inorganic Matter. Sheffield Lit. and 

 I'iiil. .Soc Re])., 1S77, p. 13. 



On the Determination of the Index of Refraction of Liquids by means of 

 the Microscope Journ. Cheni. Soc, Nov., 1S78, S pj). 



On the Colouring Matters found in Human Hair. Jomn. Anihrop. Inst., 

 Au_y. , 1S7S, ])p. I- 1 4. 



On the Determination of the Minerals in Thin Sections of Rock by means 

 of their Indices of Refraction. Miner. Maij. , No. S, .April, 1S7S, 4 pp. 



On a New Method of Studying the Optical Characters of Minerals. 

 Prcjceed. ^'orks. (ieol. Pohtec Soc, 1S7S, |)p. i-ii. 



Further Improvements in Studying the Optical Characters of Minerals. 

 Miner. .Ma>;-.. X., Se|)t.. 1S7S, 3 pp. 



On a New Method for Studying the Chief Optical Properties of Minerals. 

 SluOield Lit. and I'hil. Soc Rep., 1.S7S, p. 21. 



On the Cause of the Production of different Secondary Forms of Crystals 

 Miner. Mai;., .\o. 14. 1879, 3 pji. 



On the Structure and Origin of Limestone, .\ddress delivered at the 

 Anniveisar\' Meetinif ot the (jeol. Soc. of London. Quar. Jour. Geo!. 

 Soc, 1879, ]jp. 1-65. (Repi-inted, with a privately published appendix of 

 eighteen plates, containing thirty-six figures (of rock sections) and accom- 

 ])an\ing descriptions). 



The Structure and Origin of Limestones. Rej). ShetVield Lit. ami Phil. 

 .Soc. , 1 880, p. 1 3. 



On the Structure and Origin of Non-Calcareous Stratified Rocks. 

 Address deliveii'd ;il llie .\nniversary .Meeting of the ("leol. .Soc of London. 

 Ouar. Journ. (leol. .Soc, 1880, pp. 1-6(1. 



On the Comparative Structure of Artificial Slags and Eruptive Rocks. 



Afkhess to ihi' Cieologieal .Seilion of the British .Association (Swansea 

 Meeting). R>i). Hril. .\ssoc, 1880 (issued 1881), 8 pp. 



On the Green Colour of the Hair of Sloths. Journ. Lin. Soc, Zoolog^y, 

 X\'., 1881, J)]). 337- J4 1. 



Naturalist, 



