From the Coal Measures at Linton, Columbiana county, Ohio. Discovered by Dr. Jno. S. Newberry. When the remainder of the skeleton of this species is known, its generic relations will be better established. Another cranium accompanies the collection, which belongs to a species distinct from the last. The muzzle is not so broadly rounded and the premaxillary teeth are relatively much larger. The sculpture is more delicate with the ridges more acute. The orbits and nares are not defined. The maxillary is well preserved for a length of an inch ; its teeth are smaller than the premaxilliries ; I count four in a line ; crown simple conic. External surface of maxillary not very strongly sculptured. This species cannot be referred to its genus without further material. I therefore do not name it. DENDRERPETON ACADIANUM, Owen.
Diadkctes sideropehcus. Gen. et. sp. nov. Char. Gen. Teeth with short and much compressed crowns, whose long axis is transverse to that of the jaws. Edges of the crowns obtuse, with tuberosities on some of them, distinct from the principal apex. The latter is worn off very obliquely by attrition in all of the specimens. The crowns covered with an enamel-like substance which has no especial sculpture. Alveoli not separated. The external alveolar border in each jaw is more elevated than the internal, and in the superior series at least, diverges from the tooth-line backwards and outwards. The surface of attrition descends outwards in the maxillary series, and rises inwards in the dentary series. A large fossa pierces the inner alveolar border just behind the inner extremity of each tooth. The affinities of this very singular form cannot yet be determined. The mandibular ramus rises directly from the posterior extremity of the dental series, showing that there is a coronoid elevation of the dentary bone as in Dinosauria. The teeth are received into deep alveoli. It is probable that the vertebrae are amphiccelous. The animals belonging to this genus were, in all probability, herbivorous. Char. Specif. The jaws, and probably other bones of three individuals of this species, represent it in my collection. The lateral tuberosity of the teeth already described is on the most elevated, hence opposite, borders of the crowns in the two jaws. It differs iu its degree of prominence in different teeth, but is subject to attrition in one of the jaws at least. The form of the principal worn surface is an elongate oval. The investing layer of the crown is perfectly smooth, excepting between the lesser and greater cusps, where the obtuse edge is slightly longitudinally grooved. The surface of the jaws is not sculptured. Measurements. M.
ummary: In a double-blind trial tranexamic acid (Cyclokapron) 1 g. four times a day for the first four days of menstruation, significantly decreased menstrual blood loss in women with menorrhagia for which no organic cause had been found. No difference in side-effects was noted between the active and placebo treatment.
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