94 LAWS OF MARYLAND. [CH. 59

ginous solutions of which the content of narcotic drugs does
not exceed a proportion greater than twenty per centum
(20%) of the complete solution, to be used for medicinal
purposes.

285G. A physician or a dentist, in good faith and in the
course of his professional practice only, may prescribe on a
written prescription, administer or dispense narcotic drugs
or may cause the same to be administered by a nurse or
interne under his direction and supervision. Such a pre-
scription shall be dated and signed by the person pre-
scribing on the day when issued and shall bear the full
name and address of the patient for whom the narcotic
drug is prescribed and the full name, address and registry
number under the Federal narcotic laws of the person pre-
scribing, providing he is required by those laws to be so
registered.

A veterinarian in good faith and in the course of his pro-
fessional practice only and not for use by a human being,
may prescribe on a written prescription, administer and
dispense narcotic drugs and he may cause them to be ad-
ministered by an assistant or orderly under his direction
and supervision. Such a prescription shall be dated and
signed by the person prescribing on the day when issued
and shall be£r the full name and address of the owner of
the animal, the species of the animal for which the nar-
cotic drug is prescribed and the full name, address and
registry number under the Federal narcotic laws of the
person prescribing, provided he is required by those laws
to be so registered.

Any person who has obtained from a physician, den-
tist or veterinarian any narcotic drug for administration
to a patient during the absence of such physician, dentist
or veterinarian shall return to such physician, dentist or
veterinarian any unused portion of such drug when it is no
longer required by the patient.

285H. Except as otherwise herein specifically provided,
this sub-title shall not apply to the following cases:

(1) Prescribing, administering, compounding, dis-
pensing or selling at retail of any medicinal preparation
that contains in one fluid ounce, or if a solid or semi-solid
preparation, in one avoirdupois ounce (a) not more than
two grains of opium (b) not more than one-quarter grain
of morphine or of any of its salts (c) not more than one
grain of codeine, or of any of its salts, (d) not more than