After reading carefully the essay which, in his recently-published Varia Socratica, Part I., Prof. A. E. Taylor has written on the use of the words and in the Greek literature of the Socratic and Platonic periods, I find myself on the one hand in agreement with him as to the importance of such linguistic investigations for the understanding of Plato, and on the other in frequent disagreement with him as to the meaning of the words in the passages he cites, and the inferences he draws from them. Thinking that Prof. Taylor's analysis of the use of the terms in Hippocrates is very far from final, I offer in this paper a further contribution to their interpretation, confining myself as far as possible to the question, What do and mean in the Hippocratean writings?