1897 THE MICROSCOPE. 27 
milk testing, butter making, dairy bacteriology, dairy en- 
gineering and the breeding and feeding of dairy cows. 
The course on dairy bacteriology will consist of lectures 
upon bacteriology by Dr. H. H. Lamson and of practical 
demonstrations under the direction of Mr. C. H. Watter- 
house. 
The object of these courses is to make the students 
familiar with both normal and abmormal fermentation in 
butter, milk and cheese; with the methods of controling 
these fermentations and preserving milk for economic pur- 
poses, and with the cultivation and general treatment of 
bacteria in the dairy. ; 
They also have a complete Pasteurizing plant which is 
used for the instruction of the pupils. 
Correction.—In the January number the title of Dr. 
Reynolds’ article should read Macroscopic Microscopy, or 
“Big littleness.”’» By Microscopic Microscopy is meant 
“Little littleness.”’ 
PRACTICAL SUGGESTIONS, 
By L. A. WILSON, 
CLEVELAND, OHIO. 
Acineta flava.—This strange but interesting infusorian 
is generally found floating on the surface of a gathering of 
water. It is usually found in the early spring. It is fig- 
ured in plate I, figure 2, of the Proceedings of the Ameri- 
can Microscopical Society of 1886 on page 38. 
The animal has a triangular lorica with a long slender 
pedicel and twelve knobed tentacles, six on each side of 
the lorica. It is found in the water of the great lakes. It 
is sensitive and timid and at the slightestalarm will retract 
its tentacles. The lorica is the 1-260 of an inch in length. 
Asterionella.—A species of this diatom is almost con- 
stantly found in the gatherings from the waters of the 
great lakes. Itis most abundant in the sediment. When 
