Every license to practise medicine is required, before the licensee begins to practise, to be registered in the county clerk’s office, where such practice is to be carried on, with his name, residence, place and date of birth, and the source, number, and date of his license. Before registering, each licensee is required to file an affidavit of the above facts, and that he is the person named in the license, and had, before receiving the same, complied with all the requisites as to attendance, terms, and amount of study and examinations required by law and the rules of the university as preliminary to the conferment thereof; that no money was paid for such license except the regular fees paid by all applicants therefor; that no fraud, misrepresentation, or mistake in any material regard was employed by any one or occurred in order that such license should be conferred. Every license, or if lost a copy, legally certified so as to be admitted as evidence, or a duly attested transcript of the record of its conferment, shall before registration be exhibited to the county clerk, who, only in case it was issued or indorsed as a license under seal by the regents, shall indorse or stamp on it the date and his name preceded by the words, “Registered as authority to practise medicine in the clerk’s office,—— County.” The clerk is required thereupon to give to every physician so registered a transcript of the entries in the register with a certificate under seal that he has filed the prescribed affidavit (_ib._, s. 149). A practising physician having registered a lawful authority to practise medicine in one county and removing such practice, or a part thereof, to another county, or regularly engaged in practice or opening an office in another county, must show or send by registered mail to the clerk of such other county his certificate of registration. If such certificate clearly shows that the original registration was of an authority issued under seal by the regents, or if the certificate itself is indorsed by the regents as entitled to registration, the clerk is required thereupon to register the applicant in the latter county, and to stamp or indorse on such certificate the date, and his name preceded by the words, “Registered also in—— County,” and return the certificate to the applicant (_ib._, s. 150).