120 
STATE AGRICULTURAL SOCIETY. 
improvements that general education in Science can alone be 
expected to initiate and sustain in adequate proportion to the 
wants of the people. 
Among the more prominent objects of sanitary improvement 
that ought to engage universal attention, wherever civilization 
and the improvements of modern architecture extend, the 
following may be more particularly enumerated: 
1. An improved system of Ventilation, providing due 
channels for the supply and distribution of fresh air, and the 
discharge of vitiated air, exclusive of doors and windows. 
The conversion of all passages, stairs and entrances into chan¬ 
nels for the supply and discharge of tempered air to and from 
the rooms to which they lead. The introduction of one flue 
or ventilating shaft, to be worked by heat, and capable of 
acting on all special occasions with power on any apartment 
where it may be desired. The provision of an upper dis¬ 
charging aperture, under the control of a valve, at or near the 
ceiling of every apartment. The preparation of glass models, 
both for adults and young persons, by which, with the use of 
visible vapors, all persons might be enabled to understand, 
with greater facility, the nature of the movements of air in 
modern public buildings and habitations, and the varied or 
peculiar modifications most applicable to individual structures. 
2. The means of heating or cooling rooms by currents 
adapted to or selected from special positions. The communi¬ 
cation of heat at as low a level as may be practicable in every 
apartment to be warmed. The production of as mild a source 
of warmth to the atmosphere as circumstances may permit, by 
stoves, open fire-places, steam, or hot water apparatus. The 
warming , to a certain extent at least, of the entering cold air, 
by the escaping warm air, especially during winter weather. 
3. The provision of adequate means for the discharge of 
products of combustion by exclusive channels or increased 
ventilation, wherever a powerful artificial light is sustained by 
lamps, gas lights, or other means. 
4. The communication of pure moisture to the air wherever 
it is heated, when extremely cold and dry. 
