346 RULIFF S. HOLWAY 



of the stone axes made from eclogites, but his bibhography and his 

 summaries of previous geological descriptions are of great value to the 

 petrographer. Teall' describes an eclogite from the British Isles. 

 This rock has a dull green color with reddish-brown garnets. The 

 groundmass is omphacite with intergrowths of hornblende, feldspar, 

 and rutile — rarely with quartz and epidote. The hornblende is 

 strongly pleochroic. The color of the C ray is bluish-green; 

 b, deep rich green; a, pale yellowish-brown. Bonney,' under a 

 subheading of igneous rocks, describes a massive hornblende rock 

 that appears to be a diorite and contains many small garnets 

 with sphene, quartz, plagioclase, and zircon as probable accessories. 

 He concludes that the rock might be termed a hornblende eclogite. 



Patton^ describes a "Kelyphite eclogite" from Bohemia in which 

 the garnets are surrounded by a ring or mantle usually of horn- 

 blende and feldspar. The groundmass is a complex of hornblende 

 and pyroxene crystals. Another outcrop with striated feldspar in the 

 groundmass he calls, not eclogite, but an eclogite-like rock. With 

 the disappearance of the omphacite and garnets and of the kelyphite 

 ring the structure becomes more schistose and the rock passes into 

 ordinary hornblende schist. 



The eclogi'es of Bavaria are described by Newland^ as forming a 

 series of hills ( xtending for some fifteen miles in the Bavarian moun- 

 tains. He finds that the eclogite grades over into a basic gneiss of 

 hornblende, garnets, and feldspar, but not into the more acid gneiss. 

 The eclogite consists essentially of omphacite, hornblende, and gar- 

 nets, with the usual accessory minerals. The analyses which he gives 

 of Bavarian eclogites are quoted later. 



Traubes describes an eclogite in Silesia occurring with gabbro, 

 amphiboh, and serpentine, and forming bands separated by serpen- 



1 "On an Ecolgite from Loch Duich," Mineralogical Magazine, Vol. IX, p. 217. 



2 "Notes on the Vicinity of the Upper Part of Loch Maree," Quarterly Journal 

 0} the Geological Society, Vol. XXXVI (1880), p. 105. 



3 "Die Serpentin-und Amphibole-Gesteine nordlich von Marienbad in Bohmen," 

 Tscherm. min.-petr. Mitth., Vol. IX (1887), p. 89. 



4 "Notes on the Eclogite of the Bavarian Fichtel-Gebirge," Transactions of the 

 New York Academy of Science, Vol. XVI, p. 24. 



5 "Ueber ein Vorkommen von Eklogite in Schlesien," Neues Jahrbuch, Vol. I 

 (1889), p 195. 



