172 CANINE DISTEMPER 
clyster may be injected in like manner, though, of course, 
none is syphoned out, and in this operation a long rubber 
catheter (as used on human beings) or an ordinary mare’s 
catheter, with a lateral instead of a terminal orifice, is 
substituted for the rectal tube; and, as before, it must 
be greased prior to introduction and passed high up in a 
gentle manner. The liquid must only be allowed to enter 
at low pressure, to accomplish which the funnel must 
only be slightly elevated; the lower the funnel is held 
the slower will the food enter, and the greater probability 
will there be of its retention and absorption. 
Fic. 21.—SorT, PLIABLE CATHETER FOR RECTAL USE IN GIVING 
NUTRIENT ENEMAS (WITH LATERAL ORIFICE), 
Fic. 214.—RUBBER RECTAL TUBE FOR RECTAL LAVAGE 
(with LarRGE TERMINAL HOLE). 
The material injected will, of course, be at blood heat 
—e. about 100° F. Upon withdrawal of the catheter 
the anal opening should be kept closed, and it is an 
advantage to slightly elevate the dog’s hind-quarters for 
awhile, if such can be done without causing undue excite- 
ment. Clysters are sometimes returned unless great 
care is exercised, and the points to be noted are: 
1. The liquid must be at blood heat, so that its intro- 
duction will not be felt. 
2. No air must be injected. 
3. The tube must be greased and carefully introduced. 
4. Injection must be very slowly performed, and not in 
greater quantity than one to two ounces at a time. 
Composition of Nutrient Enemas.—The enema may con- 
