if the reader will recur to pages 714 and 715 of the first volume, he will find that, according to Sir J. Y. Simpson and Dr. Alexander Christi-son, of Edinburgh, the extract of hemp possesses an extraordinary influence over the uterine contractions, bringing them on with great promptness and energy, and having the great advantage over ergot, at least as an aid to parturition, that its operation is not long continuous. it is unnecessary to add anything to what has been already stated in the article referred to. if general experience should confirm that of Dr. Christison, he will have made a very important addition to the re sources of the obstetrician.