1. The comparator incorporates in one unit a pair of falling sphere viscosimeters one of which is riled with a certified oil and has a scale calibrated at 70 deg.

2. If a continuous current flowing through an inductive resistance is increasing, the induced e. m. f. may be regarded as negative.

3. Although unit weights vary greatly one may assume that 1 ft. depth of hard, dry, wind-blown snow weighs 10 lb. per sq. ft.

4. The current gradually dies down to zero as in the previous case, but this time it is an a. c. that is dying away.

5. There are certain processes for which d. c. is either essential or at any rate desirable.

6. The cost of supplying electrical energy depends not only on the kwh consumed but I also on the power factor of the load and the maximum demand.

7. There are numerous everyday uses for the handietalkie, one most, of you will appreciate is aiding in TV antena installation and maintenance.

8. During this period the blast wave is travelling outwards at a speed of about 700 mph.