Avaust 2, 1918] 
WHEREAS absolute war necessity and shortage of 
wheat for export has required that, in the ex- 
ehange milling of his own wheat, the farmer be 
restricted to a supply of flour equal to his house- 
hold needs and those of his farm employees for 30 
days; and 
WHEREAS the present crop prospect seems to 
make this necessity less acute, be it 
Resolved, That the Food Administration be re- 
quested to remove this restriction as early as con- 
ditions will allow. 
12. The committee was of the opinion that 
groundrock phosphate and acid phosphate 
should have the same freight classification as 
agricultural lime, taking an increased freight 
rate of one cent a hundred pounds, instead 
of an increase of 25 per cent., as applied to 
general commodities, and it was directed that 
request be made to the Director General of 
Railroads that the desired classification be 
granted. 
13 Resolutions were passed by the com- 
mittee favoring: 
(1) Regulation of the use of mill feeds by 
the mixers of proprietary feeds, so as to secure 
to the dairyman the benefits of the efforts of 
the Food Administration to lower the price of 
mill feeds. 
(2) Regulation of the manufactories of 
mixed feeds. 
(3) Equitable distribution of mill feeds. 
(4) Use of sugar substitutes in ice cream 
manufactories. 
(5) The disallowance of sugar to manufac- 
turers of ice cream failing to comply with 
reasonable standards of butter fat and solids 
not fat. 
(6) Purchase of dairy products by Army 
and Navy. 
(7) Expression of appreciation to the Food 
Administration for the publicity given to the 
economic value of milk. 
(8) Recommendation to the government to 
extend the standardization of dairy and other 
agricultural products. 
(9) Commendation to the market report 
service by the Bureau of Markets. 
The subcommittee on dairy products pre- 
sented to the tariff department of the Rail- 
road Administration an explanation of the 
SCIENCE 
121 
hardship upon the small shipper of milk and 
cream, because of the minimum charge of 50 
cents on any individual shipment. 
The regulation was promptly modified so as 
to nullify the application of a minimum 
charge. 
SPECIAL ARTICLES 
THE RELATION OF THE RATE OF BLOOD FLOW 
THROUGH THE MEDULLA OBLONGATA 
TO THE AMPLITUDE AND FREQUENCY 
OF RESPIRATORY MOVEMENTS 
ALTHOUGH the relation to respiratory move- 
ments of the changing concentrations of car- 
bon dioxide in the blood, and of afferent nerve 
impulses from the lungs to the medulla ob- 
longata has long been recognized, a third 
factor entering into the equation, i. e., the rate 
of blood flow through the medulla oblongata, 
has received but little consideration. Hal- 
dane! mentions the rate of blood flow as one 
of the factors, but the emphasis, as is natural 
in pathology, is placed mainly on the general 
disturbances of the circulation. 
Some years ago I repeated Sir Astley 
Cooper’s old experiment of ligating perma- 
nently both common carotid and both vertebral 
arteries close to their origin in dogs. The ex- 
periments were done aseptically and the ani- 
mals allowed to live. The chemical analyses 
of the brains of these animals were published 
by Waldemar Kock and S. A. Mann.? The 
general results of the ligation were similar in 
all essential respects to those noted by Leonard 
Hill. Hill remarks that in one dog, there 
was preliminary acceleration of the respiration 
following the ligation of the four arteries. 
I noticed respiratory disturbances in some 
dogs, and one in particular attracted my at- 
1‘*Text Book of General Pathology,’’ edited 
by M. S. Pembrey and James Ritchie, London and 
New York, 1913, chapter on Respiration; Organ- 
ism and Environment as Illustrated by the Physiol- 
ogy of Breathing, New Haven, 1917, pp. 5-6. 
2Mott’s ‘‘Archives of Neurology and Psychia- 
try from the Pathological Laboratory of the Lon- 
don County Asylums,’’ London, 1909, IV., pp. 
211-12; Studies from the Rockefeller Institute for 
Medical Research, X., 1910, p. 38 of the reprint. 
3‘Physiology and Pathology of the Cerebral 
Circulation,’’ London, 1896, p. 123. 
