Page 168, section 114, should read as follows:

Notices.

(No Plumbing to be done without a Permit from the Commissioner.)

Sect. 114. Every plumber, before doing any work in a building, shall, except in the case of repair of leaks, file in the office of the commissioner, upon blanks for that purpose, an application for a permit, and if required by the commissioner a plan or sketch of the work to be performed; and no such work shall be done in any building without a written permit from the commissioner.

Page 111, section 38, eleventh line:

Add after word "wood" the following - "studding, the space between the studs filled solid the full height with brick,"

Change word "of" to "with" before the word "wood" in the eleventh line.

Page 86, section 23, paragraph 2, line 3. - Word "help" should be "keep."

Page 63, section 15, paragraph 114. - Formula should be fc = 2m/jkbd2 = 2pfs/k being acts of 1907, chapter 550, as amended, also General and Special acts Relating to buildings and their maintenance, Use and Occupancy.