368 



BOGOSLOF VOLC \N<>|-;s. 



n rough sketch (fig. 1; originally published in Lutke's Atlas in 1836), 

 which, so far as I have been able to ascertain, is the tirst published 

 figure of the island; no others appear to have been drawn until 1873, 



Fig. 1.— Tebenkoi s sketch of Bogoslof and Ship Ruck in 1832. From the south. 



when Dall made six outline sketches from different positions. One of 

 these, from essentially the same point of view as Tebenkof's, is here 

 reproduced for comparison (fig. 2). It shows how the island had 



Fig. 2. — Dall's sketch of Bogoslof and Ship Rock in 1873. From the smith. 



shortened, and how the elevated central peak had weathered and dis- 

 integrated until it was hardly higher than the northwest end, which 

 end had suffered most from the inroads of the sea. 





Fig. 3.— Old Bogoslof from ivesl spit in 1891. 



In 1887, according to Greenfield, the northwest peak was crowned 

 by a slender pinnacle, which, in 1891, the date of my first visit, had 

 fallen. In the latter year this peak was a huge, bluntly rounded pillar. 



