using any unfair method of competition in commerce, and if it
shall appear“to the commission that a proceeding by it in respect
thereof would be to the interest of the public, it shall issue and
serve upon such person, partnership, or corporation a complaint
stating its charges in that respect, and containing a notice of a
hearing upon a day and at a place therein fixed at least thirty
days after the service of said complaint. The person, partnership,
or corporation so complained of shall have the right to appear
to the place and time so fixed and show cause why an order
should not be entered by the commission requiring such person,
partnership, or corporation to cease and desist from the violation
of the law so charged in said complaint. Any person, partnership,
or corporation may make application, and upon good cause
shown may be allowed by the commission, to intervene and
appear in said proceeding by counsel or in person. ‘The testimony
in any such proceeding shall be reduced to writing and filed in
the office of the commission. If upon such hearing the commission
shall be of opinion that the method of competition in question
is prohibited by this Act, it shall make a report in writing in
which it shall state its findings as to the fact, and shall issue
and cause to be served on such person, partnership, or corporation
an order requiring such person, partnership or corporation to
cease and desist from using such method of competition. Until
a transcript of the record in such hearing shall have been filed
in a circuit court of appeals of the United States, as hereinafter
provided, the commission may at any time, upon such notice and
in such manner as it shall deem proper, modify or set aside, in
whole or in part, any report or any order made or issued by it
under this section.
If such person, partnership or corporation fails or neglects to
obey such order of the commission while the. same is in effect,
the commission may apply to the circuit court of appeals of the
United States, within any circuit where the method of competition
in question was used or where such person, partnership, Of
corporation resides or carries on business, for the enforcement
of its order, and shall certify and file with its application a transcript
 of the entire record in the proceeding, including all the
testimony taken and the report and order of the commission.
Upon such filing of the application and transcript the court shall
cause notice thereof to be served upon such person, partnership