ART. 4.] HEALTH. 415

use and management of tenement houses, lodging houses and
cellars in the city of Baltimore, for the better protection of the
lives and health of the inmates dwelling therein.

1886, ch. 396.

401. A tenement house shall be taken to mean and include
every house, building or portion thereof which is rented, leased,
let or hired out to be occupied, or is occupied as the house or
residence of more than three families living independently of
another, and doing their cooking upon the premises, or by more
than two families upon a floor so living or cooking, but having a
common right in the halls, stairways, yards, water-closets or privies,
or some of them; a lodging house shall be taken to mean and in-
clude any house or building, or portion thereof, in which persons
are harbored or received, or lodged for hire for a single night, or
for less than a week at one time, or any part of which is let for
any person to sleep in for any time less than a week; a cellar shall
be taken to mean and include every basement or lower story of
any building or house of which one-half or more of the height
from the floor to the ceiling is below the level of the street
adjoining.

STATE BOARD OF COMMISSIONERS OF PRACTICAL PLUMBING.
1886, ch. 439.

402. It shall not be lawful for any person, firm or corpo-
ration engaged in the plumbing business in the city of Bal-
timore to employ as workmen in said business, any persons,
except those qualified to work as registered plumbers; and no
person shall be qualified to work as a registered plumber unless
he has made application to and received from the State board of
commissioners of practical plumbing, a certificate of competency
and has complied with the provisions of the six following sections.

Ibid.

403. If any person shall engage in or work at the plumbing
business in the city of Baltimore, without first complying with
the provisions of said sections, he shall be deemed guilty of a