RICKETS IN AUSTRALIA. Writing of the infrequency of rickets in Australian cities as compared with the notable proportion of cases found among children in the large cities of Europe, A. JEFFERIS TURNER (Australasian Medical Gazette, Jan., 1892, p. 104) is disposed to recognize a complex causation. Improper feeding, which, he believes, stands first as a cause of rickets, must not be taken as its exclusive cause. Between the ages of six months and the end of the second year improper feeding is probably as common in Australia as in Europe. Why, then, is rickets less common in Australia? Three reasons are given: First, children of two years and upward are better fed, and consequently rickets developed to a slight degree in the early years of life is more rapidly recovered from. Secondly, it is probable, as suggested by Dr. Muskett, of Sydney, that in the warmer climate of Australia the diminished consumption of hydrocarbons and proteids necessary to maintain animal heat renders their relative deficiency in the food less injurious. In the third place, stress is laid on the abundance of fresh air which children enjoy in these colonies. They are oftener in the open air than children in England, and the frail construction of the wooden houses insures a certain amount of ventilation within doors. Another factor which has been suggested as being of some importance in favoring the development of rickets, is want of light. Whether light or fresh air be the more active agent, the author believes that to the abundance of one or both of these must be attributed the comparative exemption of Australian children from this disease. THROMBOSIS OF THE SUPERIOR LONGITUDINAL SINUS. From a study of the symptoms observed in three cases of wasting disease, in which thrombosis of the superior longitudinal sinus was found at the autopsy, DU PASQUIER (Revue mensuelle des Maladies de l'Enfance, 1892, No. 3, p. 105) believes that the following grouping of symptoms, if found in the last stages of a wasting disease, may be regarded as offering fair presumption of the existence of a clot in the superior longitudinal sinus. These are: somnolence, coma, a state of rigidity, a fixed and prolonged attitude in extension or flexion, champing of the jaws, blepharo spasm, and tremor or the fingers. Note to Contributors.-All contributions intended for insertion in the Original Department of this Journal are only received with the distinct understanding that they are contributed exclusively to this Journal. 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