64 General Notes. [January, 
erican Association for the advancement of Science, micro- 
scopical subsection, meets annually in connection with the migra- 
tory sessions of the association. Chairman for the Nashville 
meeting, 1877, Dr. R. H. Ward, of Troy, New York; for the St. 
Louis meeting, 1878, Dr. Geo. S. Blackie, of Nashville, Tenn. 
Dunkirk Microscopical Society. President, Geo. E. Blackham, 
M.D.; secretary and treasurer, A. P. Alling, M. 
Fiimount reese oe Gee President S. H. Griffith, 
M.D.; secretary and treasurer, Wm. C. Stevenson, Jr.; managers, 
John ‘Gordon Gray, Tioma D. Ingram, M.D. „and Henry Winter 
Davis. 
Nature Club, Albany, New York. Organized October 1877. 
Microscopy a prominent feature. Meets at residences of mem- 
bers on the second and fourth Monday evenings of each month. 
President, Geo. T. Stevens, M.D.; vice-president, D. J. Pratt; 
secretary, Richard Prescott. 
State Microscopical Society of Illinois. President, Henry W. 
Fuller; vice-presidents, Lester Curtis, M.D., and Chas. = Fellows; 
secretary, H. F. Atwood; corresponding secretary, oe G, Oliver, 
.D.; treasurer, B. W. Thomas; trustees, S. J. Jones, M.D., 
Professor E. Bastin, W. H. Summers, H. M. Panon and James 
Colgrove. 
Troy Scientific Association ; microscopical section. Chairman, 
R. H. Ward, M.D.; vice- chairman, Rev. A. B. Hervey ; secretary, 
Professor A. W. Boy 
Tyndall sears section of microscopy. President, Rev. 
I. F. Stidham ; secretary and treasurer, Curtis C. Howard; cura- 
tor, Professor T. C. Mendenhall. 
ExcuaAnces.—A Curtis’ section cutter, made by Miller, of New 
York (cost $20.00), for microscopical objects or books. Address 
offers to C. E. H., No. 1 Gale Place, Troy, N. Y. 
Plumule scales of small cabbage butterfly (Pieris rape), mounted, 
for good slides. Address Edward Pennock, 805 Franklin street, 
Philadelphia 
Very fine BOGA of shells from the Bermudas, for objects 
of special interest. Address C. C. Merriman, Rochester, N. 
Material: Marine algæ, diatoms in situ on algæ from east e 
west coasts, musci, lichens, ferns, lycopodia, garnet sand, &c., in 
-= exchange for mounted slides. M. A. Booth, Longmeadow, 
Mass. 
SU oia 
SCIENTIFIC NEWS. 
— Two articles on the evolution of nerves and nerve-systems, — 
Q ‘ifastrated by the structure of Aurelia, a type of the lowest group 
=~ of animals in which a nervous system appears, have been pub- ; 
