CUTANEOUS SYSTEM OR SKIN. 195 



use the words of Dr. Solander, quoted by Captain Cook, "whoever 

 sits down will sleep, and whoever sleeps will wake no more." 

 These words were used by Dr. Solander during an excursion in 

 Terra del Fuego, with Sir Joseph Banks and nine other individuals, 

 when the cold was intense. Notwithstanding Dr. Solander gave 

 the precaution, he was the first to feel the effects of the cold, and 

 his companions were obliged to yield so far to his entreaties as to 

 allow him to sleep for five minutes. With the utmost difficulty he 

 was aroused. Two black servants also slept, and perished. Ex- 

 posure to a lesser degree of cold acts differently. Every one knows 

 the power of cold draughts of air, of cold or damp feet, the wear- 

 ing of damp clothes, or sleeping in damp sheets, in giving rise to 

 inflammations, even in persons whose surface has a vigorous circu- 

 lation, and is therefore not easily chilled. When the circulation on 

 the surface is languid, these causes act with tenfold force ; and 

 hence in all such constitutions it is of the utmost moment, 1st, that 

 the skin should at all seasons be protected from sudden chills by 

 warm (the best are flannels) coverings ; and, 2dly, that bathing, 

 a proper diet, and all other means that give permanent vigor to the 

 circulation should be specially attended to. Under all circum- 

 stances, indeed, frequently cleansing the skin, by removing noxious 

 excretions, and allowing the proper exercise of its functions, has a 

 much more important influence on health than is generally ima- 

 gined. 



[Good views of the lymphatic vessels will be found in Lizars' Colored Plates, page 

 99, and of the skin, at page 82 of the same. Connected with the subject of the skin, 

 the teacher may introduce some instructive lessons on the five varieties of the human 

 species and their distribution. We have found that these lessons are rendered much 

 more impressive by having drawings of these varieties, and also a skeleton map of the 

 globe, of a large size (say six feet by four), colored so as to indicate their different 

 localities. Thus, the European, or Caucasian, may be left white, the Mongolian 

 colored yellow, the American red, the Malay brown, and the Ethiopian black. The 

 drawings, and the requisite information as to localities in making this map, will be 

 found in the latter part of Lawrence's Lectures on Man, 8vo. edition.] 



