KAMTSCHATKA. QS5 



sides. In tlie autumn of I8I7 the snow had re- 

 mained in many places where it had vanished in 

 tlie autumn of 181(5. The sources in the low valleys 

 of Oonalashka, which we examined towards the 

 beginning of July I8I7, showed us the temperature 

 of the earth between 38" and 39° of Fahren- 

 heit.* 



Granite is found at Oonalashka. The moun- 

 tains of the interior, to the left of the valley, which 

 goes from the chief settlement to Makuschkin, are 

 of granite. Otherwise, on all the shores of the 

 Great Bay, on the road to Makuschkin, and even 

 at Makuschkin itself, we found only clay porphyry, 

 passing on tiie one hand, and principally, into 

 amygdaloid, and on tlie otiier hand into green- 

 stone, iinperfect conglomerate porphyry, and real 

 conglomerate. 



These kinds of rock lie over one another in im- 

 mense strata, not much inclined, and alternating 

 apparently without any law. The stratification is 

 to be seen only at a distance, in the profile of the 

 mountains. These porphyries offer only large sharp- 

 cornered, pointed, acicular shapes, and only where 



* We regret that the state of our meteorological instruments, 

 of which we had already lost several, and to preserve the last 

 of which was our duty, hindered us from repeating our observ- 

 ations, and bringing our results to a satisfactory conclusion ; 

 for this cause we were unable to use the barometer for taking 

 the altitudes. 



