Sanitary Arrangements. 153 



during the prevalence of the epidemic, three phenomena, 

 which seemed to stand in a certain relation to its appearance, 

 increase, and decrease, viz., the almost entire disappearance 

 of the ozon in July and following months, when the disease 

 was on the increase ; the gradual increase of that atmo- 

 spheric agent, in proportion to the decrease of the disorder j 

 and lastly, the influence exercised by humidity and sudden 

 changes in temperature on the intensity of the disease. Dr. 

 Candido has added to his highly instructive report some 

 meteorological tables and a graphical representation of the 

 presence and absence of ozon in the atmosphere, which will 

 be published, in its proper place, in the medical section of 

 the present work. 



The consequence of the ravages of these two scourges was, 

 that a variety of other measures for securing the public health 

 were inaugurated by the newly-established Board of Health. 

 Among others, a hospital was set on foot in a charming part of 

 the Cove of Jurujuba,* at the eastern extremity of the Bay of 

 Rio, expressly for the reception of patients afl3icted with 

 yellow fever or cholera. Every morning since that attack, 

 (and during the unhealthy season several times a day), 

 a small Government steamer, fitted up for the purpose, plies 

 round the bay, to take up any cases that may happen to occur 

 on board the ships arriving, and convey them hither free of 

 charge. Two medical men on board the steamer commence 

 the treatment, by applying the necessary remedies, during the 



* Pronounced Shooru-sliooba. 



