47 



speech. Thus a physician at Amsterdam taught se. 

 veral children born deaf, to understand what was said 

 and to giye pertinent answers. 



Mr. Goddy's daughter of Geneva lost her hearing 

 at two years old. Yet by observing the lips of others, 

 she had acquired many words, whereby she would talk 

 whole days with those that could understand her. But. 

 she knew nothing of what was said, unless she saw the 

 mouth of the speaker: so that if they wanted to speak 

 to her in the night they were obliged to light a candle. 

 Only she knew what her sister said even in-the dark, 

 by laying her hand on her mouth. 



But many deaf persons can hear, if a loud noisa be 

 made while you speak. Dr. Willis mentions one, who, 

 if a drum was beat in the room, could hear very clear- 

 ly. So that her husband hired a drummer for 

 his servant, and by that means conversed with her 

 daily. 



30. The nostrils are made not of flesh or bone, but 

 of cartilage, the better to be kept open, and as occa- 

 sion requires, to be dilated or contracted ; for which 

 purpose they are furnished with proper and curious 

 muscles. The tub s therein growing narrower and 

 narrower, lead into several little cells and winding ca- 

 vities, covered with a soft coat, and provided with ar- 

 teries, veins, glands, and filaments of the olfactory 

 nerves. This, therefore, is without all doubt the pro- 

 per organ of smelling. 



And forasmuch as it is by breathing, that the odo- 

 raut particles are drawn in. the lamina? with which 

 the upper part of the nose is barricaded, serve two ex- 

 cellent purposes ; partly to prevent any thing hurtful 

 from entering the breathing passages in our sleep (for 

 which end likewise the hairs placed at the entrance of 

 the nostrils serve) and partly to receive the divarica- 

 tions of the olfactory nerves, which are here thick 

 spread, and by this means meet the smells entering 

 with tUe breath. 



Each of the cartilaginous lanihiiE is divided into 



