c 



" * * * "F" - found in the mouth of a gas jet about 400 yards north 

 by west of Castle Rock, and about 50 j'-ards from the edge of the lake. 

 Temperature 310° F. Numerous gas jets of this type extend all along 

 the north-east shore of the lake , about 50 to 100 yards from the lake 

 edge, and from the location of specimen "D" to specimen "F"« Steam 

 and some sulphurous' gas rise from all thcso openings, A thin layer 

 of sulphur surrounds all of them. The sulphur is in two forms: the 

 ordinary flowers of sulphur, and tho neddle crystal form, 



" * * * "G" - fo\md about 500 yards north-wost of Castlo Rock and about 

 25 feet from the edge of the lake. Teniperaturc 75° F. 



IT * * * trjjtf _ is -t;2ae only weed observed growing on the island, found 

 half way between Perry Peak and Sea Lion Rock, No toir$)erature was taken, 



n * * * »rjit _ taken at the extremity of the lake nearest Fire Island, 



o 

 The temperature, of the water at this point was 90 F. 



H * * * ttg;it ancL "L" - taken on tho west sido of the lake, about 500 

 yards south from Fire Island, and on the opposite side of the lake from 

 tho small crater, at the foot of Perry Peak, which is most active, Tho 

 tenrperature of the water here T;as 107° F, 



n * * * ny^t _ taken from one of the most active "Sulphur Beds" on the 

 west sido of tho island, near the foot of Perry Peck, 



"The tectpGratiire of the air along the island ranged from about 

 54° F. along the open beach to 58° F. imdcr the lee of Perry Peak, The 

 temperatui'e of the sea i^jater about the island at the r.verage distancfe of 

 3/4 of a mile only varied from 43° F, to 45° F. The barometer registered 

 30,27. ' ■- 



"There have been no tidal observations as far as known at Bogoslof , 

 but using Unalaska as a port of reference, at the time of computing the ( 

 heights of the peaks it was low water and at the beginning of the flood. 

 There is probably a range of about three feet. 



"Numerous soundings were taken from the ship all around the , 

 island at a distance ranging from a half mile to one mile, and the bottom / 

 was 'found to be very deep, and irregular on the southwest sido of the 

 island. There and on the north side of the island, the discoloration 

 of the water indicated sorce shoaling, although no "leefs or breaks could 

 be seen, 



"We left Bogoslof at 6:45 P, M., September 14, 1910 and proceeded 

 to Attn, On the 18th instant I shaped a course for Bogoslof, intending 

 to take soundings from the ship's boats close to the island, in radial 

 lines, before proceeding to Ghemofski, About four o'clock of the morn- 

 ing of the 19th, when we were about 25 miles southwest of Bogoslof, the 

 officer-of-the-deck reported forked lightning in the northeast. I thought 



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