A zootomical work by Owen (Lectures on the Compara-tive Anatomy and Physiology of the Invertebrate Animals;London , 1843, p. 42), embracing all the orders of Hel-minthes [Entozoa], has appeared, in which, however, theauthor has directed his attention more particularly to thosewhich usually select the human body for their abode.
Many Helminthologists have latterly applied themselvesin earnest to the disproving of the notion of an equivocalgeneration, which has long since been shaken even in itscherished ground of Helminthology . Their labours havealready been crowned with brilliant success; importantdiscoveries have been made on those very points, uponwhich the doctrine of equivocal generation was supposed tobe established. These discoveries will not only add to theknowledge of the naturalist, but will be of great utility tothe physician, conveying, as they do to him, more correctviews respecting the so-called verminous diseases. A Reporton this subject, drawn up by Henle (Bericht liber dieArbeiten im Gebiet der rationellen Pathologie seit Anfangdes Jahres 1839 bis Ende 1842. Pauasiten. A. Ento-zoen. S. Zeitschrift fur rationelle Medizin. Her. v. Henleand Pfeufer. Bd. iii, Hft. 1, 1844, p. 1), will therefore bemost warmly welcomed by the medical public. With thesame view also Valentin has collected all the researches in