Die geistige Entwicklung im Tierreich

"G. J. Romanes (1848-94) was a zoologist of great attainments, a close friend of Darwin, and one of the first who rallied to his standard. Moreover he was one of the pioneers in invertebrate physiology and his work in this field was highly valued in his day (see particularly his work on echinoderms).
Romanes' first major work, entitled "Animal Intelligence", was eventually published in 1882. It was the first general treatise on 'comparative psychology' to be written and its author believed that the subject would come to rank alongside that of comparative anatomy in importance. Romanes did not deal directly with the problem of mental continuity between animals and man but, as E. G. Boring said, he was content to present the great mass of data on animal behaviour, thus laying the groundwork for a subsequent argument on the relation of animals to men."

From: Thorpe, W. H. (1979) "The origins and rise of ethology."