294 
also states that by collecting the drops of resin 
which collect in spring upon felled pine and tr 
trees about 60 liters of oil could be secured 
from every cord of wood. 
Tur Technical Department, Aircraft Pro- 
duction, of the Ministry of Munitions of Great 
Britain has prepared a detailed report on an 
example of the new German 300-h.p. Maybeck 
aero engine taken from a Rumpler biplane 
which was brought down in France in Jan- 
uary last. These engines are described in the 
report as undoubtedly representing a great im- 
provement in general design and efficiency as 
compared with the old 240-h.p. Maybach en- 
gines found in Zeppelin airships. The quality 
of the workmanship of every part, including the 
exterior finish throughout, is exceptionally 
good, and the working clearances are carried 
to very fine limits. Every part, nevertheless, 
shows the usual German characteristics of 
strength and reliability, combined with stand- 
ardization and ease of manufacturing in pref- 
erence to the saving of weight. The engine has 
six vertical cylinders with a bore of 6.5 in. 
and a stroke of 7.09 in. and weighs 911 
pound complete with propeller boss and ex- 
haust manifold, but without fuel or oil. On 
an hour’s test, running at the normal speed of 
1,400 rvolutions a minute, it gave on the 
average 290 b.h.p., the weight being thus a 
little over 3 pounds per h.p. The consumption 
of petrol was 0.55 pint and of lubricating oil 
0.038 pint per b.h.p. hour. The C.4 type of 
Rumpler machine from which this engine was 
taken is a two-seater biplane designed for 
long-range artillery reconnaissance and pho- 
tography. These machines are said to be gen- 
erally flown at high altitudes—15,000 feet to 
17,000 feet—until over the lines, and from 
French reports the 300 h.p. Maybach engines 
are more flexible and regular in running than 
the 260-h.p. Mercédés engines generally fitted 
in them. Their armament consists of one 
Spandau gun fixed in front of the pilot’s seat 
and firing through the propeller, and one 
swivelling gun mounted in the observer’s seat 
behind. 
SCIENCE 
[N. 8. Vou. XLVIIT. No. 1238 
UNIVERSITY AND EDUCATIONAL 
NEWS 
At a meeting of the General Municipal 
Council and the Chamber of Commerce at 
Bordeaux on September 10, the proposal to 
establish in honor of the President of the 
United States a Franco-American university 
of applied sciences, commerce and industry 
was unanimously adopted. ; 
Tur Birmingham Metallurgical Society has 
planned to award scholarships at Birmingham 
University to technical school students in 
metallurgy. The purpose is to assist boys who 
otherwise would be unable to afford a univer- 
sity training in metallurgy. 
Dr. H. C. McNem, associate chemist in the 
Bureau of Standards, has been appointed act- 
ing professor of chemistry in George Wash- 
ington University, Washington, D. C., suc- 
ceeding Dr. Charles E. Munroe, who assumes 
the chairmanship of the committee of ex- 
plosives investigations under the National Re- 
search Council. 
Wituram C. Morss, of Washington Univer- 
sity, St. Louis, has been elected professor of 
geology at the Mississippi Agricultural and 
Mechanical College. 
Proresson Owen W. Mutts, formerly of 
Westminster College, has been appointed pro- 
fessor of biology at Middlebury College. 
DISCUSSION AND CORRESPONDENCE 
DUAL QUEENS IN A COLONY OF HONEY BEES 
Dvrine a recent visit, June 3-6, 1918, to the 
Massachusetts Agricultural College at Am- 
herst, Mass., by the courtesy of Dr. B. N. 
Gates I was given the unusual opportunity of 
accompanying him on his inspection of the 
forty colonies of the bee yard. 
It has so frequently been stated that two 
queens are rarely found in one colony of honey 
bees that the occurrence of two queens, evi- 
dently mother and daughter, living side by side 
1In addition to many interesting facts of honey 
bee behavior, I was able to collect material for a 
morphological study of the developmental stages of 
the three castes of honey bees. I am deeply grate- 
ful to Dr. Gates for his assistance and kindness in 
securing my material. 
