(1)  Any police officer, who has reasonable grounds for believing that any person has in his possession any poisonous thing contrary to the provisions of section 19 , may search such person, and may seize and detain any such poisonous thing which he may find upon such search.

(2)  Such police officer may require any person so found in possession of any such poisonous thing to tell his full name and place of abode, and, in case such person fails to tell his real name and place of abode or gives such general description of his place of abode as is illusory for the purposes of discovery, the police officer may arrest such person and cause him to be brought as soon as conveniently may be, before a justice to be dealt with according to law.