174 GOODYEAR ON GUM- ELASTIC. 



SELF-ACTING SYRINGES. 



Fig. 18, plate vii., represents the pattern of syringe which has 

 for many years been made in Europe, of the Macintosh cloths. 

 This syringe is designed to act by the pressure of the fluid. The 

 vulcanized fabrics are found to answer best for these as well as 

 all other syringes, particularly on account of their resistance of 

 the action of oils. 



INVALIDS' CUSHIONS. 



The different kinds of cushions described in Chapter XXVII., 

 on Air- work, have been particularly noticed, as most comfortable 

 for invalids when travelling ; but the articles here alluded to, 

 are cushions of various shapes, made to suit the cases of differ- 

 ent patients. 



They are mostly of the smaller sizes, and designed to relieve 

 the patient in cases of severe illness. See plate xxvii., figs. 4, 5, 

 and 6. 



VENTILATED WATER BEDS. 



These are made of strong barred vegetable leather, of the pat- 

 tern, in all respects, like the ventilated air bed, represented, 

 plate , fig. , except that the opening for filling them is made 

 large, like those of the other water beds, represented, plate , 



STETHESCOPES. 



These are made of artificial ivory. 



HOT-WATER BOTTLES. 



See Chapter , and plate xxx. 



