176 EEPOKT OF COMMISSIONEE OF FISH AND FISHEKIES. [60] 



Discharge from the tub is effected by means of three pipes 6 inches in 

 length, inserted in the following order (Plate XL VIII) : One ^-inch pipe, 

 6 inches from the bottom 5 one ^-inch pipe, 6 inches higher than the 

 first named, and in the next stave ; one 2-inch pipe, in the stave next 

 to the last named, and 4 inches from the top. The 3 pipes thas afford 

 a sufficient discharge. 



Each pipe is muzzled by a linen scum-strainer about 1 foot in diame- 

 ter and 3 feet long, with the free end closed, giving so large a straining 

 surface that the flow into the tub rarely exceeds the flow out through 

 the strainers. This device preserves an abundance of the most minute 

 foraminifera, and assists in the separation of mud and gravel from or- 

 ganisms, the first largely sinking to the bottom of the tub, the second 

 largely passing into the scum- strainers. 



THE ELECTRIC LIGHT IN COLLECTING. 



The Albatross was one of the first ships fitted with Edison's electric- 

 light. Properly shaded to protect the eyes of the collector, it is attached 

 to the end of an in sulated cable. Although it is capable of being lowered 

 to a great distance, its successful use has thus far been confined within 

 3 feet of the surface, there being no efficient apparatus for collecting by 

 its aid from greater depths. It has, nevertheless, been of good service. 

 By its use the following Crustacea were taken off Montauk Point, 

 Long Island : 



Grangon vulgaris; 



Cancer: 



Momarus americanus ; 



Falcemenetes vulgaris ; 



Mysis americanus ; 



Heteromysis formosa ; 



Diastylis sculptus ; 



Idotea irr Grata ; 



Ghiridotea Tuftsii ; 



Ptilochirus pinguis ; 



Urothea sp. ; 



Galliopius Iceviusculus ; 



Several other Amphipods ; 



Early stages of various Decapods ; 



Early stages of various Copepods. 

 Many small fish were taken by the same means at the above locality; 

 The list of Crustacea was prepared by Prof. S. I. Smith. 



At Wood's HoU, Massachusetts, the sexual form of Nereis megalopi 

 swarmed about the light. 



In the Grulf stream two species of squids, viz, Ommastrephes illece 

 brosus and Sthenotuthis Bartramii, the latter in large nuinbers, were 

 taken by the squid-gig near the light. 



I 



