HOUSE AND GARDEN 
414 
May, 1913 
Residence of Dr. A. C. Humphrey, Morristown. N. J. 
Hoggson Bros., N. YContracting Designers. Heated by Kelsey. 
Perfect Heating Results 
cannot be had unless you buy a Kelsey. For the maximum of efficiency in heat¬ 
ing embraces the best service, the most healthful ventilation, as well as greatest 
economy of maintenance. 
KELSEY WARM AIR GENERATORS 
For Large and Small Residences, Churches and Schools 
give all of these things — and have given them for the last quarter of a century. 
That is why 40,000 users of the Kelsey testify to its superiority. 
The Kelsey supplies adequate fresh, pure air warmed to summer temperature to heat 
every room in the home. There's no forcing, no fussing, no waiting — it is always on 
the job. 
Kelsey efficiency is the most economical also. It cuts your coal bills from 
20 to 30 per cent. — and minimizes the time and labor you are asked to devote 
each day to the heater. 
•'Heating and Health”—a 32-page book containing valuable and important 
suggestions on heating which should be read by every man and woman plan¬ 
ning to build, or who are not getting satisfactory service from present 
heating. Write for free copy today. 
Kelsey Heating Company 
237 James St., Syracuse, N. Y. 
New York Office, 154K Fifth Avenue 
boating 
Heiseys ^ 
Glassware 
Includes a myriad of 
beautiful as well as 
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it is made to withstand the 
brunt of daily use. Our book 
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A. H. Heisey £r Co. 
Department 52 
Newark, Ohio 
evert 
PIECE 
north from the equator, according to the 
table of measurements for the gnomon. 
The city in it nearest to you in a north or 
south direction, is selected as in the case of 
the measurements for the hour lines. 
The gnomon should be accurately made, 
and well painted to prevent warping. The 
lower side along the line E to F (Fig. 2) 
up to the point where the line becomes 
dotted in the drawing, rests on the level of 
the ground. The gnomon is secured in a 
vertical position by two square 2" x 2" 
pointed pegs, eight inches or more long, 
shown in Figure 2 by dotted lines. These 
are driven into the ground, and the gno¬ 
mon is secured to them by nails or screws. 
Having selected and prepared the 
ground in a sunny location, place the 
gnomon in the general position that it is 
to occupy, holding it vertically with the 
pointed end E (Fig. 2) directed to the 
south, and the side E F level ou the 
ground. When the watch, accurately set 
to the standard time of the place, reaches 
exactly the hour of 12 :oo, turn the gnomon 
slightly so that a straight shadow with a 
width of two inches proceeds from it in 
the direction of the true north. 
Quickly and accurately mark the two 
sides of this shadow for 12 :oo, with two 
cords stretched from small pegs driven in 
the ground. These pegs correspond to the 
angles at either side of X (Fig. 1), and at 
B C (Fig. 1). These two cords mark the 
boundary of the 12:00 line between which 
the gnomon rests when the dial is com¬ 
pleted, and from which the balance of the 
measurements are made in laying out the 
hour lines by the aid of the measurements 
of the table and Figure 1. 
The measurements for the hour lines 
and the lines themselves should be care¬ 
fully made; the lines, when the points are 
established, being marked with the aid of 
a carpenter’s chalk line stretched between 
pegs driven in the ground. When the 
dial portion is completed, the gnomon is 
mounted, as previously described, occupy¬ 
ing the space between the two 12:00 lines, 
and with the end E (Fig. 2) resting exact¬ 
ly on the point where the 6 :oo, 6 :oo lines 
cross and meet the 12:00 lines at X in 
Figure 1. 
The measurements for the hour lines, 
and the angles of gnomon for the various 
cities, representing various distances north 
from the equator, have been calculated 
with care, and will be found correct. It 
will be observed that in the drawing 
(Fig. 1) the hour lines 3 and 9 fall 
below the upper right- and left-hand cor¬ 
ners. It will be found that with changes 
in the location where the dial is used, those 
lines, together with the rest of the hour 
lines, change their positions somewhat, the 
3 and 9 o’clock lines sometimes coming 
below the upper corners, sometimes in the 
corners and sometimes above the corners. 
There is a small variation from month to 
month in all sundials. They run a little 
slow at certain seasons, and at others some¬ 
what fast; but the variations during the 
summer months are only a few minutes. 
If you prefer a round dial instead of the 
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