THE SUMMER MICHIGAN DAILY SUNDAY, JULY 20, 1930

MICHIGAN CHEMIST FINDS FORMULA 
FOR PREDICTION OF CRYSTAL SIZES
Development of a method by The law determined by Professor
which manufacturers using proc- McCabe is that any square inch of
esses involving crystallization may crystal face area receives its share!
determine in advance the size of of precipitating material regardless1
the final crystals, was recently an- of whether it is on small crystals or
nounced by Professor W. L. McCabe large ones. By use of this knowl-(
of the University chemical engi- edge the engineer may study thec
neering department.
The process of crystallization small seed crystals as they form,
takes place, when a liquid in which and calculate their final size and
solids have been dissolved to pro- yield by considering the other fac-
duce a solution is cooled so that tors present, such as the strength1
the liquid can no longer retain the of the solution and its temperature.!
original quantity of solid. When Application of this fact may become
this occurs some of the solid mat- useful in industries manufacturing
ter appears as crystals. The crystals crystalline products on a commer-
show first as tiny "seeds" which I cial scale. Many chemicals are so
gradually grow as more solid mat- produced, as well as food prducts
ter settles upon them. such as sugar and salt.
terested are invited to attend. A. E. Wood
Physics Colloquium: Dr. B. J. Bok of the Harvard University Ob-
servatory will talk on "Selected Problems of the Physics of Nebulae,
on Tuesday, July 22 at 4 o'clock in Room 1041. All interested are cor-
dially invited to attend. Otto Laporte.
School of Music Concert: Louise Cuyler, violinist, and Maude Ok-
kelberg, pianist, will give the following program in the summer series
of faculty concerts under the auspices of the School of Music in Hill
auditorium, Tuesday evening, July 22, at 8:15 o'clock. The general
public with the exception of small children is invited but is respect-
fully requested to be seated on time.
Beethoven, .Sonata, Op. 24 (Allegro, Adagio, Scherzo, Rondo) Mrs.
Okkelberg and Miss Cuyler: Rameau-Godowsky, Tambourin; Schu-
bert-Liszt, Der lindenbaum; Schubert-Liszt, Soiree de Vienne No. 3,
Mrs. Okkelberg: Lalo, Andante (Symphonie spagnole); Couperin-Kreis-
ler, Aubade Provencale; Boccherini-Willeke, Rondo Miss Cuyler.
Charles A. Sink.
Former Students, Western State Teachers College: A dinner has
been arranged for Tuesday evening, July 22, in honor of President O. 1
B. Waldo. All former students of Western State Teachers' College are
urged to be present. The dinner will be held in the Women's League'
building at 6:30 o' clock. Those who expect to attend will report to
Thomas Diamond at Room 4018 University High school before Saturday
noon. The price of the dinner will be one dollar and twenty-five cents.
Former Students, Central State Teachers College: A dinner has
been arranged for Thursday evening, July 24, in honor of President E.
C. Warriner. All former students of Central State Teachers College are
urged to be present. The dinner will be held in the Women's League
building at 6:30 o'clock. Those who expect to attend will report to
Thomas Diamond at Room 4018 University High school before Sat-
urulay noon. The price of the dinner will be one dollar and twenty-
five cents.
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