B wm mm H M M M 
for those 
with impeccable 
taste ... 
1 
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Halls Catalog, Dept. 1499, 505 Armour 
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Halls Catalog A Subsidiary of Hallmark Cards. Inc. j 
CRUISE TO THE WORLD'S 
HIDDEN CORNERS. 
Join discerning travelers on an unforgettable 
WORLD DISCOVERER Voyage. 
The Amazon • Antarctica • New Guinea • 
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Sri Lanka /Seychelles • Arabia • 
Iceland /Greenland • North & West Africa 
14 to 76 Days. From $2,920 to $32,000. 
Society Expeditions 
itiJnsi 
Dept NH10 ~ ■ Broadway East, Seattle, WA 98102 
I’d like to explore the remote cruising opportunities of 
Society Expeditions, detailed in your 36 page cruise 
, catalog. 
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STREET 
CITY STATE ZIP 
PHONE ( )_ 
YOUR TRAVEL AGENT 
The MS WORLD DISCOVERER is registered in Singapore 
—mi 
KEEPING WARM 
basements built in areas of granitic or 
other igneous and metamorphic rocks. 
Solutions to the problem of indoor air 
pollution are not difficult and are gener- 
ally not unduly expensive. Proper venti- 
lation is essential in all houses, even in 
winter. Specific sources of pollution can 
be dealt with individually. The solution 
to smoking is clear. Even if nobody in 
the household smokes, dealing with 
guests who do — and especially with 
large parties — requires tact and diplo- 
macy. Perhaps the easiest solution is just 
to open the windows wide when smokers 
are present and hope your hospitality 
will keep everyone warm. The use of 
solvents really does require adequate 
ventilation. Painting and cleaning that 
depend on solvents should be reserved 
As buildings of all kinds become 
better insulated and more airtight, 
effective ventilation systems 
will be required to control the 
quality of indoor air. 
for warm weather, when windows and 
doors can be opened. Because radon gas 
is difficult to detect, preventive action is 
the best cure. Good ventilation and 
basement walls made of sealed or 
painted concrete should reduce or elimi- 
nate the buildup of radon gas within the 
home. 
Eliminating pollution derived from 
cooking and from open fires presents 
harder choices. Giving up an open fire- 
place may be difficult for some people. 
Installation of a fireplace insert, which 
is like a stove fitted snugly into a fire- 
place opening and closed with metal or 
heavy glass doors, would enhance the 
heat from the burning firewood and 
reduce the amount of indoor air pollu- 
tion. Wood or gas cooking stoves need 
adequate hoods and forced draft ventila- 
tion to the outside to prevent the buildup 
of pollutants, especially during the win- 
ter when most homes are sealed up 
against the cold. Other gas- or oil-burn- 
ing appliances, such as furnaces and 
hot-water heaters, must also be ade- 
quately vented to comply with building 
codes. As energy costs rise, however, the 
need to conserve heat in the house and 
William Moriarity /Rainbow 
116 
