166 



PRACTICAL HISTOLOGY. 



the side of the beaker to prevent the bottle from 

 floating up as it becomes emptied of injection, and 



Fig. 28. 



Injecting apparatus. Complete. 



s, condensing syringe, fixed to the table ; p, pressure-bottle ; 6, beaker of warm 

 water in which the injection-bottle, t, stands ; ft', small beaker containing 

 salt solution ; w, water-bath heated by a ring burner below ; the tempera- 

 ture of the water is indicated by a thermometer, t, placed in it ; c, arterial 

 canula connected to an India-rubber tube from the injecting bottle; close 

 to the canula is a steel clip. The canula rests upon a glass plate, which 

 may serve either to put the animal which is being injected upon, or to cover 

 it over, if it is thought necessary to place it in the water-bath. 



the beaker is covered with a glass plate (not shown 

 in the figure). The pressure-bottle is a large glass 



