338 



rainf/s islet. 



Rainc's Islet has already been described at page 

 126, and in the beginning of this chapter, page 

 I recur to it now for the purpose of shewing that it 

 must have existed at very near its present level for 

 a long period of time. The accompanying diagrams 

 are a plan and section of the island, from a rough 

 survey of my own. 



PLAN OF RAINE*S ISLET AND REEF AT LOW WATER. 



The port horizontally shaded is covered by water, which in the pools on 

 the reef is very shallow, but outside the reef is so deep as not to have been 

 fathomed, except at one spot, on the N.W. edge of the reef. 



At this spot the Prince George was lying with a kedge anchor on the 

 edge of the reef, dry at low water, her scope of hawser or cable was then 

 20 fathoms long, under her bows she had a depth of 21 fathoms, and under 

 her stern of 35. Her own length whs GO feet, or about 9 fathoms. This 

 gives the angle of the outer slope of the reef from 4oo to 0.3". 



B. Tha beacon. <:. 1'l.v -.1. t,s. W. The w.-lts. F. The fluglair. 



H. The huts. T. Thu Uv.U. 0, The observatory, 



