LII CONTENTS. 



Page. 

 Section G— Continued. 



Appliances for deep-sea sounding 580 



Sigsbee's deep-sea sounding machine 580 



The Tanner sounding machine 583 



Sigsbee's correction curve 584 



Steel piano-forte wire 585 



Splices in sounding wire 587 



Steel wire, used in taking temperatures 589 



Sounding leads 589 



Sigsbee-Belknap sounding rod 589 



Apparatus for physical observations, &c 590 



The Bailie-Tanner thermometer attachments .... 590 



Sigsbee's water specimen cup 593 



Water specimen cup (old style) 595 



Hilgard's ocean salinonieter 595 



Hilgard's optical densimeter 596 



Cans for observing ocean currents 597 



Marine Zoological Stations 597 



The Agassiz Zoological Laboratory 597 



Maps, models, and collections of natural history 599 



Model of western part, of North Atlantic 599 



Model of Gulf of Maine 599 



Model of off-shore fishing banks 599 



Charts and publications of United States Coast Survey 599 



Charts of United States Hydrographic Bureau 600 



Chart of Bering Strait 600 



Chart of currents in Bering Sea * 600 



Charts showing isobars, isotherms, &c, in Alaska 600 



Chart showing dredging stations of United States Fish Commission. 600 



Collections of fishes (see Section F) 600 



Collections of marine invertebrates by Fish Commission and Coast 



Survey 600 



Pycnogonida 600 



Crustacea 601 



Annelida 602 



Mollusca 602 



Echinodermata 603 



Anthozoa <, 605 



Porifera 607 



Collection of fresh-water crayfishes 607 



Collection of American fresh-water sponges 609 



Collection of marine algae from the Atlantic and Pacific coasts of the 



United States , 61'i 



Herbarium of North American algse 620 



Section H.— CATALOGUE OF AQUATIC MAMMALS. 



By Frederick W. True. 



Introduction 625 



Pinnipedia. , 625 



The Fur Seal 625 



The Fur Seal fishery 626 



Sirenians 628 



The Manatees 628 



The Ehytina .... 628 



