678 REPORT OF NATIONAL MUSEUM, 1891. 



300. Thk Ska and its Physical Cundhion.s — C'outiuued. 



Geology of the depths. Maritime geography. Charts of ocean areas. 



Models ill relief of the oceanic basins. 



Fishing grounds. Models and maps. Special research. 



301. Inland Waters. Continental Hydrography. 



Hydrographic basins. Maps showing limits. Maps and relief models of 

 special basins. Watersheds and divides. Elevations. Special hydro- 

 graphic faunas. 



Rivers and their characteristics. Fall, and its relation to water power. 

 Obstructions, natural and artificial. 



Cataracts and rai)ids. Plans. Pictures of surrounding scenery. 



Lakes and ponds. Pictures. Surroundings. Physical characteristics. 



Brooks and creeks. 



302. Marine Meteorology. 



Winds and storms. Tornadoes. P\>gs. 

 Storm charts and warnings at sea. 



303. The Science oe Navigation. 



Charts of all kinds. Routes of travel. 

 Instruments and methods of observation. 

 Signal codes. 

 Obstructions to navigation. (Ice, derelicts, etc.) 



304. Voyages and Explorations. 



Literature and history of voyages. 



Voyages of circumnavigation, deep-sea exjdoration, etc. 



Arctic and antarctic voj'ages. 



305. Marine and Aquatic Research. 



Institutions and organizations. Fisli commissions. 



Literature. 



Apparatus. 



Methods and instruments. 



306. IjIGHt-houses. 



History and literature. 

 Methods of construction. 

 Distribution, maps, etc. 



307. Light-ships. 



308. Aquatic Life: Scientific Collections and Literature. 



Works on aquatic zoology and botany. Maps illustrating geographical dis- 

 tribution, migration, etc., of fishes and other aquatic animals. 



Specimens and representations illustrative of the relations between extinct 

 and existing forms of life. 



Specimens (marine and fresh water), fresh, stuffed, or preserved, in alcohol 

 or otherwise, casts, drawings, and representations of. 



Alg;B, genera and species, with localities. 



Sponges, corals, polyps, jellyfish, etc. 



Entozoa and Epizoa. 



Mollusca of all kinds and shells. 



Starfishes, sea urchins, holothurians. 



Worms used for bait or noxious; leecbes, etc. 



Crustacea of all kinds. 



Fish of all kinds. 



Reptiles, such as tortoises, turtles, terrapins, lizards, serjients, ttogs, newts, 

 etc. 



Aquatic birds. 



Aquatic mammalia (otters, seals, whales, etc.). 



309. Aquaria in operation. 



