It was cold enough during the day, but it was still colder at night; notwithstanding this, as Alec and I had had no sleep for many hours, we found it difficult to keep awake.  We, therefore, rolling ourselves up in our wraps, lay down, while Hugh stood ready to call us at a moment's notice.  There were, however, sentries enough to keep a look-out, and Uncle Donald continued going round and round the fort, seeing that they were watchful.