The Traprain Larv Plionolite. 521 



its due. He had come to this conclusion although at that time 

 palseo volcanic equivalents of the elseolite-syenites were unknown. 

 Subsequent editions of his great work mention the Palaeozoic 

 phonolites of Brazil and Traprain Law, and he gradually discards 

 the age factor in his classification, stating definitely in his 1896 

 edition (12) that he recognized that it had no real significance in 

 classification. In the 1908 edition (13) he concludes that this fact 

 is widely recognized because " it has occurred to no geologist to give 

 a separate name to the palaeozoic phonolites, leucitophyres, etc." 



Appendix III. 

 BIBLIOGRAPHY. 



(1) E. B. Bailey, in "The Geology of East Lothian": Memoirs of the 



Geological Survey of Scotland, 1910, p. 128. 



(2) 0. A. Derby, " On Nepheline Rocks in Brazil, with special reference to 



the association of Phonolite and Foyaite " : Quart. Journ. Geol. Soc, 

 vol. xliii, 1887, p. 457. 



(3) A. Gemmell, " Chemical Analyses of Borolanite and Related Rocks " : 



Trans. Edin. Geol. Soc, vol. ix, pt. v, 1910. 



(4) F. H. Hatch, " A New British Phonolite " : Geol. Mag., 1892, p. 149. 



(5) E. H. Hatch, " Lower Carboniferous Rocks of East Lothian (Garlton 



HUls) " : Trans. Hoyal Soc. Edin., vol. xxxvii, 1892, p. 124. 



(6) W. E. Hillebrand, " The Anal^^sis of Silicate and Carbonate Rocks " : 



Bulletin 422, United States Geol. Surv., 1910. 



(7) A. von Lasaulx, " Petrographische Studien an den vulkanischen 



Gesteinen der Auvergne " : Neues Jahrbuch, 1872, pp. 351-7. 



(8) Lady McRobert, " Acid and Intermediate Intrusions and Associated 



Ash Necks in the Neighbourhood of Melrose " : Quart. Journ. 

 Geol. Soc, vol. Ixx, 1914, p. 303. 



(9) P. Marshall, " Geology of Dunedin (New Zealand) " : Quart. Journ. 



Geol. Soc, vol Ixii, 1906, p. 381. 



(10) H. Mohl, " ilber die mineralogische Constitution und Einteilung der 



Phonolite " : Neties Jahrbuch, 1874, pp. 38-43. 



(11) H. Rosenbusch, " Mikroskopische Physiographic der Mineralien und 



Gesteine," 1887. 



(12) H. Rosenbusch, " Miliroskopische Physiographie der Mineralien und 



Gesteine," 1896. 



(13) H. Rosenbusch, " Mikroskopische Physiographie der Mineralien und 



Gesteine," Band II, 2, Massigen Gesteine, Ergussgesteine, 1908. 



(14) S. J. Shand, " On Borolanite and its Associates in Assynt " (Second 



Communication) : Trans. Edin. Geol. Soc, vol. ix, pt. v, 1910, 

 p. 402. 

 In conclusion I would like to thank my colleague Mr. E. B. Bailey, 

 and Dr. E. Campbell, of Edinburgh University, for their help and 

 advice in the preparation of this paper. 



Part II. 

 The chemical analysis (I) of the Traprain Law phonolite was 

 made in the laboratory of the Geological Survey. For purposes of 

 comparison, the former analyses by J. H. Player (II),-*- and the 

 partial analysis by W. Pollard (III),^ are also given. 



1 Trans. Roy. Soc Edin., vol. xxxvii, 1892, p. 125. 



- " The Geology of East Lothian " : Mem. Geol. Surv., 1910, p. 130. 



