* 
` important business to be offered for consideration, an 
332 General Notes. [ May, 
much for the acquisition of geographical information. In respect 
to the great water system of Africa, in its connection with the 
mystery of the Nile and the mystery of the Congo, he has solved 
-an enigma that has attracted the attention of the world for 
ages, and fixed his name in the foremost rank of geographers, ex- 
plorers and travelers.—Condensed from the New York Tribune. — 
MICROSCOPY. ! 
MicroscoricaL SECTION, Troy SCIENTIFIC ASSOCIATION. —A 
regular meeting of this section was held on the evening of April 
ist, Dr. R. H. Ward, chairman of the section, in the chair. 
Minutes of the last regular meeting and record of the subse- 
quent soirée were read and approved. 
Dr. Ward announced an invitation from the microscopists of 
Indianapolis to their fellow-workers throughout the country, to 
attend a National Congress of Microscopists in that city, com- 
mencing on Wednesday the 14th of August next, and adjourning 
in time for members to attend the meeting of the American Asso- 
ciation at St. Louis, one week later. The biological section of 
the Indianapolis Lyceum of Natural History, assisted by many 
influential citizens, will make ample arrangements for the comfort 
and economy of visitors from abroad, both in obtaining reduce 
rates of travel and in the most liberal entertainment while in the 
city. A detailed statement of the proposed work of the congress 
and of the facilities offered by the local management will be given 
to the public, within a few weeks, in the form of a circular. the 
committee of arrangements, consisting of Prof. E. T. Cox, chair- 
man, Mr. E. Sharpe, Dr. Henry Jameson and Dr. W. W. Butter- 
field, secretary, have received the individual endorsement and 
promise of cooperation of leading microscopists, and now formally 
extend an invitation to the microscopical societies and workers 
throughout the country, with the assurance of a successful meet- 
ing. Such a congress, with its opportunities for stimulating 
microscopical work, discussing questions of general importance, 
and cultivating personal acquaintance among fellow-workers d 
their way to St. Louis, with no additional expense and no lay 
save the time spent at the congress. Microscopists desiring to 
for circu- 
attend should apply to the secretary of the committee _ 
lars giving further information, and should send notice of any 
papers proposed to be read, accompanied by a copy of the papers 
or by abstracts of the same, to the secretary of the com 
1 This department is edited by Dr. R. H. Warn, Troy, N. Y. 
d titles of | 
mittee at - 
