674 LAWS OF MARYLAND. [CH. 403

ment and maintains a system of milk control under State or
local law or city ordinance; nor shall any rule or regulation of
the State Department of Health apply to the production,
processing, storing and selling of milk for any such city or
town. All rules and regulations issued by a health authority,
when duly promulgated, shall have the force and effect of law.
Nothing contained in this Act shall be so construed as to
divest any municipality of any authority it may now have to
enact milk ordinances in furtherance of the public health, pro-
vided such ordinances are in addition to and not in conflict
with any of the provisions of this Act, and provided further
that before any such ordinance becomes effective it has the
approval of the health authority. This paragraph shall not be
applicable to any city or town (a) having a population in
excess of One Hundred Thousand (100, 000); (b) maintaining
its own municipal health department; and (c) maintaining1 a
system of milk control under State Law or City Ordinance.

504. No person shall process, store for sale, have in posses-
sion with intent to sell, offer or expose for sale, or sell any
milk or milk product which is adulterated or unwholesome, or
which contains any colostrum in any appreciable quantity, or
which, if defined in this sub-title, does not conform to such
definition, or which was produced, processed, pasteurized,
packaged, dispensed or served in violation of any of the pro-
visions of this sub-title, or of any rule or regulation made and
promulgated thereunder, and the possession of any such milk
or milk product by any person holding a permit under this
sub-title shall be presumptive evidence of an intent to sell
such milk or milk product for human consumption.

505. It shall be the duty of every producer or distributor
operating under a permit from the health authority, upon
learning that any person in his employ or on his premises is
afflicted with a communicable or contagious disease classi-
fied by rule or regulation of the health authority as trans-
mittible by milk, or who has been in contact with any such
person within a period of time prescribed by such rule or regu-
lation, to promptly give notice of such fact to such authority.
Upon receipt of any such notice, or whenever the health
authority has reasonable ground to suspect that any milk
supply is or has been subjected to such contamination, it shall
be the duty of such authority to take all reasonable measures
to safeguard the public interest, and in so doing may exclude
such supply from sale or distribution for human consumption;
may make reasonable medical and bacteriological examinations
of all persons suspected of such infection and of their body
discharges; and may by order prevent such persons from