292 Eminent Living Geologists — 



Dr. Harker received the Wollastou Donation Fund, 1896 ; the Murchison 

 Medal, 1907. He was President of Section C, British Association, at 

 Portsmouth, 1911. He has also kept up connexion with his native county, 

 and was President of the Yorkshire Naturalists' Union, 1911, and President 

 of the Yorkshire Geological Society, 1912-13. The McGill University 

 (Montreal) conferred on Dr. Harker the honoraiy degree of LL.D. in 1913. 

 He is at this time President of the Geological Society of London, 1916-17, 

 till February, 1918. 



Lest of Dr. A. Harker's principal Geological Writings. 



1884. "Graphical Methods in Field Geology" : Geol. Mag., pp. 154-62. 



1885. " The Oolites of the Cave District" : Naturalist, pp. 229-32. 

 " The Cause of Slaty Cleavage" : Geol. Mag., pp. 15-17. 



" On the Successive Stages of Slaty Cleavage " : ibid., pp. 266-8. 



1886. "Report on Slaty Cleavage and Allied Rock Structures": Rep. 



Brit. Assoc, for 1885, pp. 813-52. 



1887. "On some Anglesey Dykes," I and II: Geol. Mag., pp. 409-16, 



546-52. 



1888. " Notes on the Geology of Mynydd Mawr and the Nantlle Valley" : 



ibid., pp. 221-6. 



"On some Anglesey Dykes," III: ibid., pp. 267-72. 



"Additional Note on the Blue Hornblende of Mjmydd Mawr": 

 ibid., pp. 455-6. 



" On the Eruptive Rocks of the Neighbourhood of Sarn, Caernarvon- 

 shire " : Q.J.G.S., vol. xliv, pp. 442-61. 



1889. "Notes on the Physics of Metamorphism " : Geol. Mag., pp. 15-20. 

 " Local Thickening of Dykes and Beds by Folding" : ibid., pp. 69-70. 

 " Eyes of Pyrites and other Minerals in Slate " : ibid., pp. 396-7. 

 The Bala Volcanic Series of Caernarvonshire (Sedgwick Prize Essay 



for 1888), Svo, Cambridge. 

 " Petrological Notes on Boulders from the Boulder-Clays of East 

 Yorkshire" : Proc. Yorks. Geol. Soc, vol. xi, pp. 300-7. 



1890. "Petrological Notes on Some of the Larger Boulders on the Beach 



South of Flamborough Head " : ibid., pp. 409-23. 



1891. "The Ancient Lavas of the English Lake District": Naturalist, 



pp. 145-7. 

 "Notes on a Collection of Rocks from the Tonga Islands" : Geol. 



Mag., pp. 250-8. 

 (With J. E. Marr. ) " The Shap Granite and the Associated Igneous 



and Metamorphic Bocks" : Q.J.G.S., vol. xlvii,- pp. 266-327. 

 "Petrological Notes on Rocks from the Cross Fell Inlier" : ibid., 



pp. 512-25. 

 " Thermo-metamorphism in Igneous Rocks " : Bui. Geol. Soc. Amer. , 



vol. iii, pp. 16-22. 



1892. " Physical Geology in the Basin of the Colorado " : Natural Science, 



vol. i, pp. 205-10. 

 "The Lamprophyres of the North of England": Geol. Mag., 



pp. 199-206. 

 " Porphyritic Quartz in Basic Igneous Rocks" : ibid., pp. 485-S. 



1893. "Norwegian Boulders in Holderness " : Naturalist, pp. 1-4. 



"The Use of the Protractor in Field Geology": Sci. Proc. Roy. 



Dubl. Soc. (N.s.), vol. viii, pp. 12-20. 

 (With J. E. Marr.) "Supplementary Notes on the Metamorphic 



Rocks around the Shap Granite": Q.J.G.S., vol. xlix, pp. 359-71. 

 "On the Migration of Material during Thermal Metamorphism": 



Journ. Geol., vol. i, pp. 574-8. 

 "Extinction Angles in Cleavage - Flakes " : Min. Mag., vol. x, 



pp. 239-40. 

 " Berthelot's Principle applied to Magmatic Concentration " : Geol. 



Mag., pp. 546-7. 



