BREAST PUMP. 171 



EAR TRUMPETS. 



These are articles which, for many years, have been made of 

 spiral wire hose, covered with native gum and velvet, with ivory 

 or horn trimmings. A superior article is now made of vulcanized 

 gum-elastic hose, trimmed with caoutchouc ivory and whale- 

 bone. 



VARICOSE STOCKINGS. 



This article, which has heretofore been made in Europe of 

 the covered native gum thread, is made at much less expense, 

 either of perforated elastic compound, or perforated knit goods. 



The article is designed to be used for the bandaging of vari- 

 cose veins. 



NIPPLE SHIELDS. 



The shield of this article is made of caoutchouc ivory or 

 whalebone compound. The nipple of elastic compound. They 

 are designed as a substitute for an article of this kind heretofore 

 made of wood and metal. See plate vii.. fig. 5. 



BREAST PUMP. 



This article is made of a hollow bulb of elastic compound, 

 about one-quarter of an inch in thickness, and about four inches 

 in diameter, with a glass tube inserted at the mouth of the bulb. 

 The pump being applied to the breast, acts by the expansion of 

 the bulb after the air has been expelled. This may be con- 



-esS!^^ 



