2. Where an official veterinary surgeon or inspector has reason to suspect that a suppurative condition exists in the carcase of any sheep or lamb he shall –
(a)examine by palpation as well as by observation such of the lymph nodes as are readily accessible; and
(b)in the case of a sheep, examine in detail such of the following lymph nodes as he has not already so examined: prescapular, superficial inguinal, precrural; and, in the case of a lamb, examine in detail such lymph nodes if he has found evidence of disease in the course of visual examination or palpation.