BY JAMES TOLSON, ESQ. 103 
1st.—THE RATE OF THE EMISSION OF HEAT AT THE COMMENCEMENT. 
The formula for ascertaining this is— 
(a) 
Q x (t’ — T’) = 1°95 xX (98 — 32) = 129 units 
per square foot per hour. 
This is the rate at which the heat is lost at the com- 
mencement. As the surface of the meat, whatever the 
thickness may be, emits the same amount of heat at the 
commencement, this formula covers the flow for all thick- 
nesses at the beginning of the operation. 
From the formula, (C x t) + (Q x E x T’) 
C+ (Q x E) 
can be ascertained the temperature of the external surface 
of the meat when that of the internal surface has commenced 
to fall below 98°. This is now given for thicknesses from 
1 to 6 inches. 
ey (b) 
Thickness in inches I 2 3 4 5 6 
a eye tee eres 
By the formula Q x (t’ — T’) as above, the rate of emis- 
sion at this point of the process is ascertained. It is as 
follows, in units :— 
(c) 
Thickness in inches 5.3 I @i0)\9) ft a Pees 
Flow of heat in units per 6 
square foot per a 95 74 y Pat one. ane 
Having found the rate of emission at the commencement, 
and at the point where the temperature of the internal 
surface is commencing to fall below 98°, the average rate 
of the flow is obtained. This is as below, in units :— 
eee o 
Thickness in inches sgh of Zo ahha 5 6 
Average flow in units per i F 
ee foot per pet EMA nereia 5) Bos OM goats 
From the temperature of the external and _ internal 
surfaces at this point the average temperature of the mass 
can be found, and from that, the average fall from 98°. 
° 
. This is now given, and also the number of units of heat 
removed during the interval. 
