1881.] Geography and Travels. 505 
are invited from all geographical societies. Delegates will Hae 
ments of other countries. Geographical societies are invited to 
send in suggestions of ye to be discussed. 
In connection with the Congress there will be held an Inter- 
national Geographical Exhibition to be open during the month of 
September. It is ela into sections corresponding to those of 
the eongress as follow 
—Instru y perk S at geometry. an ee and instruments of topog- 
raphy, pe sy and astr Te ages ree 2 nts for me asuring velocity. 
Q 
xh 
—_— Sidereal m maps; maps of stiningadatton ait h metry, Original topo- 
en ore cainitl: portable and of precision, relating to hydrography. Re- 
flectors, Chro: onometers, marine and pocket. Logs, leads, dredge es; igang for 
ermo 
rogra 
maritime geography. Guides ton igation; carognes of lighthouses, beacons, &c, 
Proposals for a uniform jritersnionat's system of buoys and beac ns, and for com- 
pleting the lighting of the coasts. Layin oF submarine lines of telegraph 
Magnetica charts (isoclinous, isogon and isodynamic). Cha: f iso- 
bars and bithietine, &c. Maps of geological, zoBlogic on and botanical geography. 
bran 
Class Iv.—Maps and atlases referring to gener ig nthro opology, ethnology and 
comparative philology. Other publications and Satincttors relating to these subjects. 
Grammars and vocabularies of languages little known ;_ commons studies. 
t ublication i 
aps other publications of historical geography. A t and 
ern works and manuscripts relating to the history of geography. Ancient maps 
and globes. Instruments used bv ancie geographers, astrolabes, 
SS Vi.—-Works, charts and diagrams bee statistical, economi d commerci 
geography (population, agriculture, manufactures, commerce, public works, coloniza- 
tion, &c.), psggy ctions of commercial ae and objects made from a gi phi- 
. Class. vir reac and methods ve instruction in geography. — Outlines and 
aniseapes, Wall maps; eee weed struments for instructions in geography. 
Atlases an rata cose diction Cha rts and maps of the globe, terrestrial and 
celestial gl globes. Copi of topographical charts; maps and plans in relief. Differ- 
methods of re a rae maps (photography, heliotyphy, nc gh zin¢gogra- 
: p 
Phy, photolithography, chromolithography &c.). Materials and apparatu s specially 
in the : 
Class vitl.—Instrum bt fo or expeditions, astronomical determinations and to 
Rraphical copies ; traveling — ters a en thermometers, pedometers rise ape oe 
Portable photographic appar. specimens of camera lucida. Route maps 5 sk 
ill nee ys, faé:Similies, eke tions per collections of every description whic > 
Mustrate voyages of discovery, photographic views and drawings of countries little 
explored Instructions for geographical expeditions. Instruments and equipment 
3 1 san ici : 
€ncampmen d act 
a, and valtivgin, of all kinds shine to geographical voyages. Publications 
instruments used j in Alpine climbin 
VOL. Xv.—No yr, 35 
