VIII LIST OF ILLUSTRATIONS 



MEDUSAE.* 



Page. 



Fig. 1. — View of Pegantha from the side 534 



2. — View of Pegantba from the aboral region 534 



FISH-CULTURE, t 



Fig. 1. — Method of supplying hatching-boxes with water at Xeuhauseu 546 



2. — Method of supplying hatching-boxes with water at Dachsen 547 



3.— Zenk trough 552 



4. — Section of Zenk trough 552 



5.— Modification of California batcbing-trough used at Seewiese. flat view 553 



G. — Modification of California hatching-trough used at Seewiese, upright view 553 



7. — Contrivance for protecting fish iu tanks 560 



8. — Eel- way at Neuhauscn 570 



THE ALBATROSS.i 



Plate I. — Plan of reported position of Hope Bank 686 



II. — The Tanner sounding-machine mounted on stoam-cutrer 686 



III. — Improvement in deep-sea sounding-machine 686 



IV. — The Tanner improved thermometer-case 680 



V. — Counter- balance wheels 686 



VI. — Baird's pneumatic indicator 086 



VII. — Blower for the Baird pneumatic indicator 686 



VIII. — Baird's automatic steam-trap 686 



IX, X.— Proposed new boilers 686 



THE GRAMPUS. § 



Plate I. — The U. S. Fish Commission schooner Grampus ■ 701 



WYTHEVILLE STATION. || 



Plate I. — Water supply and ponds for brood fish 800 



II.— General view of buildings and grounds 800 



III. — Plan of hatchery, first floor 800 



IV. — Plan of hatchery, second floor 800 



V. — View of interior, showing details of equipment 800 



VI.— General view of ponds. 800 



DREDGING STATIONS. <I 



No. 1.— Chart showing the positions of the dredgings made by the TJ. S. Fish Commission in the 

 Gulf of Maine, Massachusetts and Cape Cod Bays, and in Vineyard and Nantucket 

 Sounds and adjacent waters from 1871 to 1887 -. 1018 



2.— Chart showing the positions of the dredgings made by the U. S. Fish Commission iu Long 



Island, Vineyard, and Nantucket Sounds and adjacent waters from 1871 to 1887 1018 



2.— Chart showing the positions of the dredgings made by the TJ. S. Fish Commission in the 

 Atlantic Ocean from 1871 to November, 1857, including also the deep-sea dredgings of 

 the TJ. S. Coast Survey and the British steamer Challenger in the region mapped 1018 



♦ .—Chart showing positions of all the dredgings made by the U. S. Fish Commission and the 

 TJ. S. Coast Survey in the Gulf of Mexico and adjacent parts of the Atlantic Ocean ami 

 Caribbean Sea from 1867 to November, 1887 1018 



5.— Chart showing the positions of all the dredgings made by tbo TJ. S. Fish Commission, TJ. 

 S. Coast Survey, and the British steamer Challenger in the Caribbean Sea and adjacent 

 parts of the Atlantic Ocean from 1 867 to November, 1887 1018 



*In Fewkes' Report <>n Medusas from the Gulf Stream. 



tin Drs. Bettoni and Vinciguerra's Notes on the Fish-cultural Establishments of Central Europe. 



J In Tanner's Report on Work of the .1 Ibatross. 



§ In Collins' Report on Operations of Grampus. 



|| In McDonald's Report of Operations at Wytbeville Station, Va. 



'i. In Sanderson Smith's List of Dredging Stations in the North Atlantic. 



