This transcription of notes made by Charles Darwin during the voyage of H. M. S. Beagle records his observations of the animals and plants that he encountered, and provides a valuable insight into the intellectual development of one of our most influential scientists. Darwin drew on many of these notes for his well known Journal of Researches (1839), but the majority of them have remained unpublished. This volume provides numerous examples of his unimpeachable accuracy in describing the wide range of (...) animals seen in the course of his travels, and of his closely analytical approach towards every one of his observations. Only at the very end of the voyage were his first doubts about the immutability of species expressed consciously, but here are to be found the initial seeds of his theory of evolution, and of the fields of behavioural and ecological study of which he was one of the founding fathers. (shrink)

This argument has emphasized the professional character of Darwin's early activities, largely in order to balance the usual portrayal of the amateurishness of his early training and field of study. Arguing this way has revealed the interplay between Darwin's personal interests and his professional obligations, the latter being particularly important for the period from October 1836 to July 1837. In several instances, notably the treatment of his collections, the progress of his thought followed the professional lead directly. In the absence (...) of such a lead Darwin did not pursue certain issues, if only for lack of time. Thus the subject of man did not figure in his initial formulation of a transmutationist position. Only after the commitment to the new point of view had been made did the issues emerge which will be treated in Part II of this article. However, we may close by noting Darwin's inherited disposition on the subject: in the summer of 1837 Darwin responded to Lyell's claim that the change from irrational animal to rational man represented “a phenomenon of a distinct kind from the passage from the more simple to the more perfect forms of animal organization and instinct” with a fanciful doodle in the margin.121 The thoughts behind the bemused scribbling were to occupy a good portion of Darwin's time for the next two years. (shrink)