It is necessary that I should here briefly. Allude to the circumstances under which my observations and collections were made. Had I been previously aware of the difficulties and discomforts that would attend me, I should have hesitated to have performed more than a tithe of what I finally accomplished per varios casus per tot discrimina rerum. Inexperienced and deprived of any official support or recognition of other than my professional duties, I was only urged on by the consciousness of the importance of the work I had voluntarily undertaken. At length my health began to give way, and it was with mixedfeelings of satisfaction and apprehension that I returned to the islands for the third and last year. One cause of continual worry lay in the fact that. For two-thirds of the time spent in this region, I had only my cabin for the disposal of my collections, the size of the ship (a schooner of about 150 tons), and the arrange ments made before leaving England, not permitting of anv other plan.
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