DEEP-SEA EXFLOKATION. 
353 
heavy weights, or if it is i)racticable to carry the reel iiioimted upon an axle in readi 
ness for running off wire without changing its position, a single lengtli of 5,0h0 
fathoms would seem to be best for the si)a.re ro])C, 
If the working reel is empty and is to be tilled, a sufficient (piantity shoidd be 
ordered in one length. On board vessels of ordinary capacity, carrying, as tlie AUm 
tross usually does, 4,000 fathoms of spare l ope, there should be one reel containing a 
single length of 2,000 fathoms, one of 1,000 fathoms, and two with 500 fathoms each. 
The same wooden axle Avill answer for all of the reels. 
The transfer of dredge rope from a wooden transporting reel to the service leel 
is a simple operation, providing the former is lirmly secured in place and a strong 
uniform tension is maintained upon the rope. The transporting reel may be placed on 
deck, in the hold or storeroom or on a wharf, and the rope led through ordinary 
blocks to the dredging-boom end; thence to the service reel it should be led through 
its regular channels. The reading of the register should be noted in order that the 
exact amount of rope upon the reel may be known; in fact, it is good practice, strictly 
followed on board the Albatross, to note the register whenever }’ope is wound upon or 
veered from the service reel, either in large or small quantities, entering ex])enditnres 
or losses from any cause in the record book, also noting the amount remaining in its 
appropriate place in the correction table; otherwise errors are sure to creep into the 
applied corrections. 
BEAM-TRAWL FRAME. 
The beam trawl frame shown in cut 62 was in general use on board the Alba- 
tross during the tirst year of her cruise for both shoal and deep water work, aaid 
while it was satisfactory under ordinary conditions it was not considered the best 
form under all circumstances. Its dimensions are as follows: 
Beam: Iron pipe; lengtli, 11 I'eet; diaincter, ontsiile, 2-J- inches; thickness of metal, A; inch. 
Collars: Cast brass; length of ilange, 91 inclies; rvidth, 4 inches; thickness of metal, | inch. 
Bolts: Iron; length, 2-1 inches; diameter, f inch. 
Rnuuers: Flat liar iron, 1 inches wide, f inch thick; length, 5 feet; height, 2 feet 5 inches -j- 4 
inches for the beam; total, 2 feet 9 inches. 
Weight of frame, 365 pounds. 
The several parts are interchangeable; the net with its appendages is identically 
the same as that used with the Tanner beam trawl Ho. 1 and will be described in 
connection ivith it. 
THE TANNER BEAH-l’RAWL FRAME. 
The trawl frame shown in cut 03 is a modilication of the form just described. 
The beam and collars remain the same and are interchangeable; the runners are the 
same length and height but their form is different, both top and bottom being made 
F. C. B. 1890—23 
