64 THe Microscope. 
and long rows of tables, each holding a lamp and two microscopes, 
were arranged on the floor. The hall outside was filled with tables, 
also each with its attendant, bedecked with a bouquet and repeating 
over his explanation of the slide, as each new sight-seer bent over the 
instrument and gazed on the wonders of the minute. Fifty instru- 
ments were in operation, each one numbered, and a printed program 
was given at the door, enabling the visitors to have a clear under- 
standing of the specimens. The slides were all changed at a quarter 
to nine, and a new program presented. Among the finest specimens, 
and those which pleased the visitors most, were sections of grape- 
stems, butterfly’s wings, trichinz spirais, Brazilian beetle, and the 
views with polarized light. The circulation of the blood was beauti- 
fully shown in the membrane of a frog’s foot and in the gills of a liv- 
ing menobranchus. Our boarding-uouses were represented by some 
specimens of buckwheat batter containing live eels. Dr. Stowell and 
his accomplished wife were managers of the exhibition, and received 
many compliments for its success. President and Mrs. Angell, a large 
number of the professors and their wives, the best citizens in Ann 
Arbor and the very elite of the student community, were present.”’ 
—$——<$_<$<<s or _—_ 
HOW TO KEEP LIVING INFUSORIA. 
J. M. ADAMS. 
R. A. C. STOKES, of Trenton, N.J., has luckily hit upon 
the right method of sending infusoria, although it may not 
be new to some. Lemna plants are used, which keep the water 
sweet and supply oxygen while in transit. This alga is so 
easily cultivated, harby, prolific, and so well adapted for this 
use, that none need despair of sending infusoria alive hereafter. 
AMERICAN SOCIETY OF MICROSCOPISTS. 
HE Executive Committee has decided to call the next annual 
meeting of the Society in Rochester, N. Y., Tuesday, Au- 
gust 19, 1884. Local arrangements for the convenience of those 
in attendance are already being made. Circulars of informa- 
tion will be issued in due time by the officers of the Society 
and by the local committee. 
D. S. Ketricort, Secretary, Buffalo, N. Y. 
