Dr. Miram on the Vitality of Intestinal Worms, 377 each verticillastrum, rather larger than those of T, chamcBclrys, shortly stalked ; calyx between tubular and bell-shaped, about as long as the floral leaves, the teeth lanceolate, nearly equal, slightly spreading, slightly tinged with purple ; corolla yellow with a darker reddish tip, bearded below, and with a broad Teucrium regium. band of hairs pointing downwards on the under side within the tube. This plant is distinguished from T, chamcrdrys by the di-stinct line of separation between the floral and other leaves, the rhomboidal form of the former, and by the latter being ovate-crenate, not ovate-oblong and incised, the much longer internodes, and nearly simple branches, Hab. Spain, Schreber ; Italy, Morison ; Smyrna, Fleischer ; near Abergavenny, England, Mr. E. Y. Steele. St. John's College, Cambridge, June 6, 1840. EXPLANATION OF THE FIGURES. a. Represents a lower leaf. h. Floral leaves and verticillastrum. c. A flower. d. A flower expanded so as to show the form and interior. XLV. — On the Strength of the Vital Principle in Intestinal Worms. By Dr. C. E. Miram, Teacher of Zoology and Compai'ative Anatomy in the Academy of Wilna*. Of the cold-blooded Vertebrate Animals, and especially of the Amphibia, it is well known that they can pass years in a state * From Wiegmann's Archiv, Part I. 1840.