LXVIII KEPORT OF COMMISSIONER OF FISH AXD FISHERIES. 



D.— Scientific Investigation. 



Of the live papers in this section, the lirst is a report by J. Walter 

 Fewkes, on the medussB collected by the Albatross iu the Gulf Stream 

 region iu 1883-'84, illustrated by ten plates. The next is an article 

 on the origin of heterocercy and the evolution of the fins and fin- 

 rays of fishes, illustrated by eleven plates and eight figures, by John 

 A. Eyder, Messrs. Chittenden and Cummins furnish a paper on the 

 relative digestibility of fish flesh iu gastric juice, with tables of their 

 experiments. Two translations, from the German follow, the first on 

 the migrations of eels, by Dr. Hermes ; and the other being a contri- 

 bution to the natural history of parasites as affecting certain kinds of 

 fish, by Dr. Kerbert. 



E. — MlSCELLAJN^EOUS. 



In this section is a statement of the status of the U. S. Fish Commis- 

 sion in 1884, by G. Brown Goode j while the appendix is concluded by 

 a paper from the German on the results of the London Fisheries Exhi- 

 bition in their practical value for Germany, by Dr. Benecke, being a 

 general review of tlie subject and of the articles exhibited. 



This series of forty-two papers contains many of high value, and is 

 illustrated by nearly one hundred plates and figures. Nine of the 

 longest articles are provided with special indexes, as it is often desir- 

 able to issue these papers in separate pami)hlet form for distribution to 

 specialists not interested in the contents of the entire volume. 



E.— SUPPLEMENT TO THE EEPOET PEOPER. 



26. — LIST OF LIGHT-HOUSE KEEPERS RENDERING ASSISTANCE. 



The following is a list of the light-houses (with their keepers) at which 

 temperatures and occurrences of ocean fish have been observed during 

 a portion or all of the present year : 



List of light-houses on the Atlantic coast at which ocean temperatures have heen taken daring 

 the year 1884, together ivith the number of monthly reports made at each one. 



Petit Mauan light-house, Petit Mauau Islaud. 



George L. Uptou, Millbridge, Me 12 



Mouut Desert light-house. Mount Desert Rock. 



Thomas Milan, Southwest Harbor, Me 12 



Matinicns Rock light-house, Penobscot Bay. 



William G. Grant, Matinicns, Me 12 



Seguiu light-house, Seguin Island, Kennebec River. 



Thomas Day, Hunnewell's Point, Me 12 



Boon Island light-house, Boon Island, Me. 



Alfred J. Leavitt, box 803, Portsmouth, N. H 12 



Miuot's Ledge light-house, Cohasset Rocks, Boston Bay. 



Frank F. Martin, Coha-sset, Mass 12 



Raee Point light-house, Cape Cod Bay. 



James Cashman, Proviucetown, Mass 12 



