Evening star. [volume] (Washington, D.C.) 1854-1972, 1930-07-22

in all directions about the center OF
the explosive. When explosives are ex-
ploded in the open and apparently I'm
confined such differences seem TO oc-
cur because when dynamite Is exploded
upon the rock the rock is shattered:
when black powder Is exploded upon
the rock apparently no effect Is pro-
duced upon the rock. The fact Is that
both of these explosives are confined
at the time of explosion by the in
visible atmosphere about them. When
they are exploded, however, the dyns-
mite explodes at a rate enormously
greater than that of the black powder.
The gases which are produced upon its
explosion are therefore given on so
fast that they become confined by the
air about them and therefore they exert
pressure upon the rock SUFFICIENT To
break the rock In the case OF the
black powder the gases are given on
so slowly that like the gases from
chimney fire. they mingle with
the atmosphere and therefore the pres
sure exerted by the exploding powder
upon the rock rs too little to produce
any breaking effect
@. How many men were in the Con-
federate Arm vat one timer. r. K.
A. There are supposed to have been
TOO 900 soldiers fighting on the Con-
federate side during the Civil War when
the strength of the Confederate Armies
was the greatest.
O. Is DR., Goddard still working on
his rocket? What will be accomplished
by it?-B. L.
A. New impetus has been given Or.
Robert GoddardS studies by the dona-
ton of a fund by Daniel Guggenheim
for the development of this research.
to n
rocket will do for science, but one OF
It's practical uses will be to make auto
matte records of atmospheric data that
can be obtained in no other way. Pre-
cision instruments will be placed in the
rocket compartment and will register
these data Then a parachute viii
bring it back to earth.
@. How old is the new president of
the University of California?-B. W.
A. Robert Gordon Spronl is 80 years
old. He graduated from the university
! in 1913, is an administrative and execu-
tive expert and has been controller
of the institution for several years.
@. Are red-and-white Holstein-F Erie
sian cattle considered as pure in breed,
as the Observation-Disclosures. N.
A. The Department of Agriculture
saws that it understands that In Holland
there have been for many years both
red-and- white and black-and-w white
Holstein- Friesians. A great many OF the
breed in this country carry recessive
hereditary factors determining red
color. Consequently, not infreauently
red-and- white calves will be secured
from registered black-and-white para
ents.s The Holstein- Friesian Associa-
ton, however, will not register the red
and-white offspring in this country
even though they come from registered
Holstein -Friesian parents.
O. What is ecology?-P. p.
A. 1t is a comparatively new branch
of botany, which deals with the rela-
ton of the plant to its environment
plant associations and plant distrtbu-
ton.
@, When did the issuing Of Con-
tinental money cease?-D. T. L.
A. The year 1880 marked the end Of
the issuing of Continental money. The
| year 1888 is the last year in which State
paper money was issued, and in that
year only Pennsylvania; New Jersey
and North Carolina issued such cur
rency. The other 10 Colonies had stop
ped previous to that year.