1208 ARTICLE 32.

offense. Every conviction of unlawful practice subsequent to a first con-
viction thereof shall be a conviction of a subsequent offense.

An. Code, sec. 11. 1904, sec. 11. 1888, sec. 8. 1896, ch. 378, sec. 12. 1920, ch. 481, sec. 11.

11. Nothing in this Article shall be so construed as to interfere with
the rights and privileges of physicians and surgeons duly licensed to prac-
tice their profession in this State, nor of persons holding certificates duly
issued to them by the State Board of Dental Examiners of Maryland prior
to the passage of this Act or of dental students operating under the immedi-
ate supervision of their instructors in dental infirmaries or dental schools
duly incorporated under the laws of the State of Maryland.

By persons " holding certificates," is meant those Eolding certificates issued by
board of examiners of Maryland. Knowles v. State, 87 Md. 206. (Decided prior to
act of 1920, ch. 481.)

This section referred to in construing sec. 4. State v. Knowles, 90 Md. 653. (De-
cided prior to act of 1920, ch. 481.)
As to physicians and surgeons, see art. 43, sec. 115, et seq.

1920, ch. 481, sec. 12.

12. All persons now authorized to practice dentistry in this State,
and those who may be hereafter registered under the provisions of this
Article, shall be exempt from service as jurors in any of the Courts of this
State.

An. Code, sec. 12. 1920, ch. 481, sec. 2.

13. Nothing contained in this Article, shall prevent, or be construed as
in any way to hinder the prosecution, conviction or punishment of any
person who may have offended against any of the provisions of Chapter
378 of the Acts of the General Assembly of Maryland passed at its January
Session, 1896, or against any of the provisions of Article 32 of the Bagby's
Annotated Code of Public General Laws, entitled " Dentistry," or against
any of the provisions of any of the Acts of the General Assembly of Mary-
land of which the same is a codification.