MABSH FEVERS. 247 



wash, properly medicated and carefully prepared, is pleasantcr and more 

 beneficial. It dissolves the injurious secretions and deposits, and the whole 

 is readil}^ removed with the brush and water. 



7th. Avoid eating hot food! Thoroughly masticate and insalivate the 

 food before swallowing it. Frequent indulgence in sweetmeats, etc., 

 between regular meals disturbs the process of digestion, and a viscid secre- 

 tion is deposited in the mouth (from the stomach), which is very injurious 

 to the teeth. 



8th. Parents! Carefully attend to jonr children's second dentition. 

 Gently prevail upon them, at an earlj^ age, to visit at frequent intervals, a 

 careful and skillful operator. 



Eemember that four of the permanent double teeth come in at about 

 the age of six years. They are very liable to decay early, are very large, 

 and should never be allowed to require extracting. 



Children do not "shed" their teeth as they did informer ages. Instead 

 of being trained to masticate niitritious food, they are tempted with and 

 allowed to "gulp down" delicacies, hot cakes, hot beverages, etc., 

 Thus, by depriving the teeth of their natural function and overtasking 

 the stomach, a morbid condition of the general system is produced; the 

 ^' first teeth" are jjrematurely decayed, and the permanent set are not ma- 

 tured at the proper period of dentition. The consequences are terrible. 



9th. Never allow any one to extract a tooth, or to dissuade you from having 

 them filled, unless absolutely necessary. Many so-called dentists, actuated 

 by selfish motives, advise extracting and sacrifice many teeth which com- 

 petent operators can render serviceable for many years. 



10th. Carelessness and procrastination are responsible for a large majoritj^ 

 of teeth that are lost. 



Marsii-Fevers. — A substantial addition to our knowledge of the true 

 nature of paludic fevers appears to have been made by Messrs. Lanzi and 

 Terrigi, of Eome. Lanzi has found in the cells of microscopic algse from 

 the Roman marshes certain dark-green granules, which are most numerous 

 when the plants are farthest gone in decomposition. At length these 

 granules fill the cells, are black under the microscope, and the algaa emit an 

 offensive odor. In the Campagna marshes are formed in winter, which in 

 the spring develop algffi abundantly. In summer the water disappears, and 

 the algasthen putrefy, the ground afterward growing phanerogamous plants. 

 Toward the fall of the year the algaa in the parts still covered with water 

 also die, and the slime at the bottom of the marshes contains quantities of 

 the dark granules. The latter may also arise from other plants in the state 

 of decay, even where there are no marshes. Lanzi regards these granules as 

 a sort of ferments. Now, the pigment-granules found in the liver and 

 spleen of individuals suflPering from malaria have quite similar properties 

 to those ferment-granules, and they can be developed quite 'similarly. M. 



