1837.] Geological Specimens from Kemaon. 661 



catastrophes may have been elevated from beneath the level of the present 

 plains where they were originally deposited, to their present position which 

 varies from three to five thousand feet above the ocearr. This is sug- 

 gested merely as an idea, the discoveries now in progress in this quarter 

 conducted by Cautley, Falconer, Baker and Durand are likely to 

 afford some rational grounds from which conclusions may be safely derived. 



129. Shewing the contorted structure of the compact limestone in 

 particular places. The specimen adduced is from the declivity of tfye 

 Mahikali valley. 



130. Clay stone from the Ramessa valley. 



131. Breceiated limestone from Shore vallej'. 



132. Greenstone from Shore valley. 



133. A single specimen found in one of the small rivulets near Lohoo- 

 ghat. It resembles porous lava and consists of grains of felspar imbedded 

 in a pitch.like vesicular matrix. 



134. An earthy globe found in the soil at Lohooghat : it has somewhat 

 the appearance of a volcanic bomb. 



Metallic Ores and their associates. 



135. Talc and quartz of a curved slaty structure containing copper 

 ore — Shore valley. 



136. Another specimen. 



137. Limestone talc and calcspar containing copper ore from the same 

 locality. 



138. Copper ore contained in a curved slaty structure of calcareous 

 talcose and argillaceous nature. Geognostic position intermediate between 

 clay-slate and limestone, valley of Borabice. 



139. A very rich copper ore from Gungowly. 



140. Another variety from the same mine. 



141. Another specimen intermixed with rhomb spar. 



142. Iron pyrites and rhomb spar. 



143. Talc occurring with the copper ores. 



144. Iron ore from the Ponar valley, repository in 5 and 20. 



145. Another variety from the same situation. 



146. Another species of iron ore from a repository in clay-slate near 

 Dhee. 



147. Iron mica forming the sides of the repository from which 145 

 was extracted. 



Distinct series of Geological Specimens from the Abor or sub- Himala- 

 yan mountains in the 95° E. Long, and about 28° 15' N. Lat. lying 

 between the confluence of the Dihong and Dibong rivers in Upper 

 Assam. 

 In the original catalogue of my Assam collection, I included 46 



specimens of rocks brought to me from the Abor mountains. The 

 4q 



