Sat Nov-15-13. Ran the engine today for the regular weekly battery charge. Started at eleven a.m. and shut down at ten p.m. Used eleven gallons of kerosene and one gallon gasoline. The pipes being well drained, thawing was not difficult this morning. The engine is running perfectly, and at a fraction more than normal load. Shifting over to kerosene from gasoline usually requires an hour or more, and lots of patience, but once shifted the running is splendid—factory tests could want no more perfect results. There was two inches of ice on the top of the engine cooling tank this morning & the radiator outside is frozen so hard that it seems useless and not worth while to attempt to thaw it; the 300 gallons of water in the tank had a temperature of about 165°F after 11 hours running. The house has been quite hot since noon—when the heat from the engine had circulated. The batteries are making a good showing for the adverse temp-erature conditions under which they have to operate. The temperature in the battery locker at the beginning of charge was +25°F. The first few hours of the charge