1898-99.] On Obtaining a Large Field of View, &c. 55 
Extract from ‘New English Dictionary,’ p. 352, col. 3, re the word “ chine.” 
Chine. I. An open fissure or crack in a surface, a cleft, crack, chink, 
leak (obs.) 
II. (a) A fissure in the surface of the earth, a crevice, charm (obs.) (6) 
On the Isle of Wight and Hampshire coast, a deep and narrow ravine cut 
in soft rock strata by a stream descending steeply to the sea. 
Exs.— 1830, Lyell, ‘Princ. Geol.’, i. 281: “One of these chines near 
Boscomb has been deepened twenty feet within a few years.” 1837, Marryat, 
‘Dog Fiend’, xv.: “ A certain point close to the Black Gang chine.” 1879, 
Jenkinson, ‘1. of Wight’, 69: “The Shanklin chine is the most beautiful 
of any on the island.” 
These chines seem to have been formed in several places 
where there is no regular stream. It seems, in fact, that when 
once a breach has been made in the line of the cliff it is 
rapidly increased both in depth and length by therain. From 
what I have said I have little doubt that the members will 
agree with me that these cliffs form an admirable specimen of 
sub-aerial denudation. 
IX.—A SIMPLE METHOD OF OBTAINING A LARGE 
FIELD OF VIEW WITH THE COMPOUND 
MICROSCOPE. 
By Mr WILLIAM FORGAN, 
(Read April 26, 1899.) 
Wirtn a tube length of 160 mm., or about 64 inches, the 
field of view of a 3-inch object-glass is a circle half an inch 
in diameter; with a 2-inch object-glass the field is a circle of 
slightly over three-eighths of an inch in diameter; while with 
a 14-inch object-glass it is rather more than one-fourth of an 
inch in diameter. Hitherto there have been only two means 
used for increasing the size of the field of view. One of these 
was devised by Mr Joseph Jackson Lister. It was chiefly 
intended for the purpose of erecting the image in the ordinary 
compound microscope, and enabling it to be used as a dissect- 
ing one. This was effected by screwing the erecting portion 
of an ordinary terrestrial eyepiece into the lower end of the 
