750 Scientific News. July, 
rable to increase or diminish the specific gravity of the preserva- 
tive, the proportion of glycerine may be changed. as above, 
or modified as indicated, he thinks it also a trustworthy medium 
for mounting Infusoria and the softer animal tissues —/our. of the 
Roy, Micros. Soc., Feb., 1884. 
:0: 
SCIENTIFIC NEWS. 
— The thirty-third meeting of the American Association for 
the Advancement of Science will be held at Philadelphia, Penna, 
Sept. 4-10, 1884. 
The British Association has invited the members of the Amer- 
ican Association to join in the meeting at Montreal, and the 
American Association and the local committee of Philadelphia 
have invited the members of the British Association, with their 
near relatives who may be with them, to take part in the Phila- 
delphia meeting. 
series of receptions will be offered the association and its 
guests, including one at the Academy of Music after the pres 
dent’s address; a reception at the Academy. of the Fine Arts; a 
garden party at Haverford College, and a microscopical exhibi- 
tion at the Academy of Natural Sciences. The botanical section 
of the Academy of Natural Sciences will organize patiia 
cursions, and will also hold a special meeting at the Academy | 
Botanists. There will be visits to the Internatianal Elec ; 
Exhibition, the Zodlogical Gardens, Fairmount Park, Indepen 
dence Hall and other places of interest, and the various ore 
tions in the city will welcome the association to their halls. = 
eral excursions will be offered to take place during the wee 
to the sea-shore, the coal regions and other points of interest, 
possibly limited excursions to more distant points aft 
meeting. ia we 
The meeting will be called to order, in general ape of 
o'clock on Thursday morning, Sept. 4th, in the g n 
Music, by President C. A. Young, of Princeton, who wi 
probably be given up to excursions and receptions. Hie ‘hat at 
programme for the rest of the meeting will be simular i 
previous meetings. / si 
‘The headquarters of the association will be at the Academy 
