Hoveaber fcS, 192S 
Mr, K, Gime, Swett 
705 Hollywood becurity 
Hollywooa, California 
Lear Mi*. Swett s 
I ££11 teiciag up the ibeais ia j^our letter of Mavonber Elat in turn, 
Ha'oliag in of the dredge from stay depth is, as you say, conditioaeci 
upon the effect c-f tiie rate of speed through the watei* upon the live orgaaisTiS 
ia the* iipparc-tus. One hundred uud thii'ty feet per- rainute sseas to me rathei' 
fast because we have always hauled up the di'eage at ssh^it seeined to me a faii’ly 
slow speed. The only iaforaation that I iiave at hand is eontained in Tanner’s 
old account on the Albatross operations, publisheu in 189o» In laariy ways 
tills is one of the best listle manuals of dredging in generiil with which I am 
scqu&iii'ted. There shoala be a copy in tiie Vcilero libraiy, and I aa sending you 
a voluue of the, Fish Cosyaission Bulletin iix which it appears. If it is too 
buUc^' for hiUidy use, the article could be^ stripped out tnid separately bound. 
On pages 595 ..and S94 of Tanner’s account, the speed of hoisting is given as 
about e 5 fm, per i?.inute, which is even faster tii-an you propose. Consistent 
with efficient operation, the slower the better wouic. appear to t.-e a good r-ule. 
On page £5£, Tanner .'aentions preserving the cable by aii application 
of linseed oil. In Floxlua ®e jusfc used a very heavy black oil, alraoat tarry. 
The truae natae of this I shall obtain as soon as possible from GnpUrin Mills 
of the Carnegie vessel, tiie nnton loh.m . 
As to the most desirable ifeight of dredge, I asa afraid I can contribute 
little at this time. It would depend upon the capacity of the hoist and the 
strength of the cablej but aside from thete wo’uld depend aottly upon the ease 
of handling the catch over the side of the boat and the quantity brought u,.) for 
sorting over, I will get what further details brs, Fraser, Manter, and Taylor 
have to offer regai'ding special means of collecting, also their preferences in 
the way of types of dredges. They will be provlcdng containers and apparatus 
othei- tiiun dredges theiaselves, uriless they have a particular type of dredge tiUit 
they want to bring 'along. About this I adll write you at the first opj.'ortunity. 
Thqy will also bx'ing the necessaip'- preservatives, though hr. Taylor 
could use a gallon of formaluehyoe uxid mentions ti at it is a little troublesome 
