Marcu 29, 1912] 
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DAME Erin Cotonmeceyarkrecieteiteiterstcteolarsiertereh-iele 1,543 
25. Western Reserve ................++.- 1,331 
PAG, Chhaoimnny” Soosoheopsoondatboooodaodo 1,324 
Bi, JOaag IAS, cosoosobgocneuobdo Dood 1,057 
Asi, Wiirsiinies  soobobocossbdgosecvndnvoccod 804 
Rupotr Tomso, Jr. 
CONVOCATION WEEK MEETINGS 
I HAVE read with interest two recent com- 
munications’ in Science relative to the meet- 
ing place of the different scientific societies, 
with which I am heartily in accord. To me 
the only valid objection to holding these meet- 
ings at the time and place of the American 
Association is the tendency of the different 
meetings to conflict with one another. This 
difficulty should be to a great extent obviated 
if the executive committees of related societies 
(for example, zoologists, naturalists, anato- 
mists) were to jointly arrange the program 
for their societies, allowing this program if 
necessary to include the day preceding or fol- 
lowing those on which the general association 
meets. Certainly this difficulty was not obvi- 
ated last year when the three societies above 
named met at Princeton, the meetings of 
zoologists and anatomists distinctly conflict- 
ing with each other. On the other hand, the 
great objections, as it seems to me, of holding 
these meetings at different places and at the 
same time is the entire loss of the benefits of 
the general association by those who wish to 
attend the sectional meetings. Speaking per- 
sonally, I was much disappointed to miss the 
Sigma Xi convention at Washington last 
year in order to attend the zoologists’ meeting 
at Princeton. To one living at some distance 
*Morse, Max, SciENCE, December 22, 1911. 
Reese, A. M., ScIENCE, January 12, 1912. 
SCIENCE 
497 
from the heart of things a trip to the annual 
meetings involves a considerable sacrifice of 
time and money, and he feels like getting the 
largest return possible for such sacrifice, 
which was not possible for all of us with the 
meetings arranged as they were last year. 
If the present policy of aloofness on the part 
of certain societies be deemed desirable in fu- 
ture, might it not at least be possible to ar- 
range the sectional meetings so as not to con- 
flict with those of the general association? 
In the case of a society with eastern and 
central branches (viz., zoologists), where the 
majority of the members belong to the former 
branch, I believe it would be fair to all to 
hold two eastern meetings to each one in the 
central district, such meetings to be joint 
meetings of the two branches. Separate 
meetings by each branch seem to me unde- 
sirable, at least if such meetings are held at 
the same time, as was the case with the zool- 
ogists in 1910. 
R. T. Youne 
UNIVERSITY OF NortH DAKOTA 
THE TIDAL MACHINE 
To THE Epiror oF Science: The undersigned 
desires to say that the machine described in 
the issue of this journal of February 23, 1912, 
under the name of “The Harris Tidal Ma- 
chine” is the product of one of the bureaus 
of this government, the Coast and Geodetic 
Survey. The officials of that bureau, who are 
well acquainted with all the details of its 
development, from first inception to final com- 
pletion, named it “The Coast and Geodetic 
Survey Tide Predicting Machine.” Under 
that name it was described briefly in the 
Journal of the Washington Academy of Sci- 
ences, July 19, 1911, and more fully, with 
illustrations, in Hngineering News of July 
20, 1911. 
E. G. FiscHer 
WASHINGTON, D. C., 
February 26, 1912 
Reptyine to Mr. Fischer’s note concerning 
my article on “ The Harris Tidal Machine” 
published in this journal on February 23, 
