necessary for the final drop was not forthcoming.

In the course of the last year or two, I have mentioned these glacières
now and then in England, and no one has seemed to know anything about
them; so I determined, in the spring of 1864, to spend a part of the
summer in examining the three we had already seen or heard of, and
discovering, if possible, the existence of similar caves.

The first that came under my notice was the Glacière of La Genollière;
and, though it is smaller and less interesting than most of those which
I afterwards visited, many of its general features are merely reproduced
on a larger scale in them. I shall therefore commence with this cave,
and proceed with the account of my explorations in their natural order.
It is probable that some of the earlier details may seem to be somewhat
tedious, but they are necessary for a proper understanding of the
subject.

La Genollière is the _montagne_, or mountain pasturage and wood,
belonging to the village of Genollier, an ancient priory of the monks of
S. Claude.[1] The cave itself lies at no great distance from Arzier--a
village which may be seen in profile from the Grand Quai of Geneva,
ambitiously climbing towards the summit of the last slope of the Jura.
To reach the cave from Geneva, it would be necessary to take train or
steamer to Nyon, whence an early omnibus runs to S. Cergues, if crawling
up the serpentine road can be called running; and from S. Cergues a
guide must be taken across the Fruitière de Nyon, if anyone can be found
who knows the way. From Arzier, however, which is nine miles up from
Nyon, it was not necessary to take the S. Cergues route; and we went
straight through the woods, past the site of an old convent and its
drained fish-pond, and up the various rocky ridges of hill, with no