الفهرس 
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Abstract
SUMMARY
The present study was conducted on 24 clinically healthy adult mongrel dogs of both sexes. All dogs were premedicated with combelen in a dose of 0.1 mI/Kg body weight before injection of the local analgesic. The animals were divided into six groups:
Group 1:
In this group the dogs were given 0.5% xylocaine in a dose of 2.5 mi/Kg body weight in the form of linear infilteration analgesia subcutaneously, intramuscularly and intraperitoneally at the middle line of the abdominal wall, Group 2:
Animals of this group were anaethetized with 0.5% procaine hydrochloride in the same dose and exactly as the first group.
Group 3:
Analgesia was performed as before but using 0.5% Marcaine in the same above mentioned dose.
Xylocain in a 0.5% solution, with a dose of 1 ml for every 20 cm body length begining from the occipital bone till the tip of the tail, was injected extradurally.
In animals of this group procaine hydrochloride was injected extradurally in the same percentage and dose as in the 41k group.
Group 6
Marcaine was injected in dogs of this group extradurally in the same percentage and dose as before.