WRANSCRIPED FROM RLGORD RECEIVED FROM DR. LeDERigeG 7/7/50

July 2, lox
Madison, «isco sin

Dr. Josep: Lein
Bristol La:oratories Inc.
Syracuse 1, New York

Dear Joet

I am enclosing a small popular article on Low Lai. which was puirlished in tne
Dow Company house organ just now. You provably know the story, anc the only
reason I am sending it to you is its reference te the cooperative arran,e ents
that the U. S. Fisheries and Wild Life Service seenus to lave set up already
with respect to the screenin, of chemicals for fish control. Tunis is a sul ject
we have discussed before, and, at the time, it did not see. a profitaLle venture
for Bristol LaLoratories. However, if there is a screenin, pro, ran in bel: .,
this might open up other opportunities wisich will be oi-vious to you. Altiiouch
the synthetic tri-chloral nitrophenol would seem to Le a sutisractur; a.ent
for the control of lampreys, and it is doubtful that aiy antibiotic could
compete with it, there are many other ecolo: ical probleme of this , encral

sort which would warrant some screenin; tests. The ones that came to mind
immediately are the control of ruff fish, carp in many lakes where they can

be quite a peet, and in somewhat related fashion tne control of al. ae wirich

are nuisances in many lakes that would otherwise be very satisfactory for
recreational purposes, Although it is quite understandatle that these might
be inappropriate for agents for screening programs at bristol Latoratorics,

the chance of having the compounds that you have already developec an found
unsuitable in other respects to determine their applicability in this ticld
might be worth considering,

Ksther and I will be leaving in about 3 weeks for a‘month's trip to Europe
which tiis time will include a vacation, tooe I am enclosin; an itinerary, or
rather just let me tell you that our main destination will be Stock:olm for
the International Conpress of Microbiolozy. We will Le away a,-proxi ately
between July 25 and September 10. If there is anything at the Conyress you
would like me to be on a special lookout for, please let me know.

As ever,

Youre sincerely,

Josiua

JLtac