Gentlemen

    The ventilating arrangements for the State House are completed and in very
effective action;  Mr Woolley has handed to your clerk the keys of the four air
chambers and it only remains with you to give orders to the janitor of the House
to assume charge of the apparatus and to keep it in running order.
    It requires little attention; principally this has to be given in the occasional
filling with water of Eight tin vessels and to facilitate this service a small sink
and pump have been established at the level of the vessels.  Should heating
of the State House be suspended for several days, in cold weather, then this
water should be drawn off
    I add a paper of instructions which if you approve you can hand as your own
to the said janitor

        Resp        J. Crawford Neilson

Annapolis, Feby 16, 1882

The person in charge of the ventilating apparatus for the State House.  will observe
To ventilate the rooms of House of Delegates, Senate and Senate Cooridor, open
the large transoms on the doors.
    In cold weather, see that the storm doors are properly adjusted.
    In very windy and cold weather, see that the slats of the inner dome windows are
closed by pulling down and belaying the four cords which are found on the floor of
the dome loft at first landing of stairs to dome.
    In ordinary weather allow the said slats to open by loosing the cords.
    See that the eight tin vessels in the air chambers are kept full of water.  A pump is
supplied so as to make this service very easy.
If at any time the steam heating of the hall should be turned off in cold weather for
more than a day - then draw off the water out of the eight tin vessels by the spiggots
and empty into the sink at pump.
    Observe the play of the valves   They should be loaded (as now) to work lightly
and with perfect freedom  If dust or dirt interferes with the hinges clean them and
oil them
    Observe that the valves are loaded outside and that if any accident should damage
the weight it must be replaced.
    This apparatus required so little attention, that any thing going wrong with it is
simply an evidence of gross neglect.
    Give to pump and sink, the ordinary attention.