It appears to the writer that there is urgent need of more "nature books"-books that are scraped clear of fiction and which display only the carefully articulated skeleton of fact. Hence this little volume, presented with some hesitation and more modesty. Various chapters have, at intervals, appeared in the pages of various publications. The continued narrative is now published for the first time; and the writer trusts that it may inspire enthusiasm for natural and scientific research, and inculcate a passion for accurate observation among the young.