278 Proceedings of Boyal Society of Edinburgh. [sess. 
(39) Pirie, J. H. Harvey, “ Deep-Sea Deposits of the South 
Atlantic Ocean and Weddell Sea,” S cot. Geog. Mag., vol. xxi., 1905. 
(40) Spurr, J. E., “The Iron-hearing Rocks of the Mesabi 
Range,” Geol. and Nat. Hist. Surv. of Minnesota, Bull. No. X., 
Minneapolis, 1894. 
(41) Tizard and Murray, John, “Exploration of the Faroe 
Channel during the Summer of 1880 in H.M.S. hired ship Knight 
Errant ,” Proc. Roy. Soc. Edin., May 1882. 
(42) Thoulet, J., Echantillons d’eaux et de fonds provenant des 
campagnes de la “ Princesse- Alice.” Camp. Prince Albert P v , fas. 
xxii., Monaco, 1902. 
(43) Zirkel, Lehrbuch der Petrographie, 1894. 
( Issued separately August 30 , 1906 .) 
