February 14, 1925* Dr* Alioi Baalltoai School of Fublio Health, Harvard University, 60 Tea Dyke Street, Boston, ass* Dear Dootor Hamilton 1 am very glad to receive your letter of February lth with referenee to the subject of tetra-ethyl lead and in reply to attempt to explain to you briefly the sequence of events to date with referenoe to this matter* Several years ago 1 was informed that a corporation intended to nee something of this eort and began to Initiate an Investigation as to its possible h&rmfulness* 1 as informed, however, that the Bureau of Mines was about to undertake a similar Investigation and, of course, took no further steps* Some months ago X reoelved a letter from Dr* Tandell Henderson oailing my attention to the use of the substance and suggesting a conference* 1 addressed a letter to each of the persons when X oonld ascertain were interested in this matter asking for advice as to whether they considered a conference advl*efeiii4$$ whether the present was an opportune time* The majority of the answers were to the effect that it would be better to postpone the conference until further investigation had been made by men working along this line* Several days ago X reoelved a letter from Dr* Henderson enclosing a copy of a letter which he had written orltloielng the technique used by the Bureau of Mines in their observations and a somewhat similar letter from Dr* Haven Emerson with reference to the natter* 1 at once took the matter up with our scientific division and appointed the first vacant date, which is next Monday, for us to further consider the subject of calling a conference and X shall be glad to communicate with you with reference to our decision* X personally can see no possible objection to a round table discussion of the whole matter and shall again take up the question of a conferonce with those interested* X am extremely gratified that the Oarage Workers Union feels that this Service would conduot an impartial investigation and more that you feel the same way about it* X hope that you had a pleasant and profitable trip to Moscow and X would like very much to have an opportunity of discussing your trip with you* Sincerely yours.

Ford otherwise objects to this interrogatory because it is overly broad, unduly burdensome, and seeks information that is neither relevant nor reasonably calculated to lead to 88

Dear Doctor Wishard: When I was In Muncie several days ago I talked with some of your people about the possibili ty of our finding out something of the magnitude of the exposure in different parts of your storage bat tery plant by means of making various analyses of the excreta of selected individuals* Since I have come back'to the laboratory I have been working on some data that we have obtained on a .group of men under various conditions of exposure, and there are a number of points in our experimental work on which I am very much in need of some additional information, I am especially interested in knowing something of the changes in the rate of excretion of lead and in the amount in the circulating blood where symptoms are occurring, as compared with the same type of exposure in symptomless men.

of Gravelbourg, Saskatch ewan, Canada, a suspeetec^ase of lead poisoning.

PIONEER WHITE LEAD rt r;Tt /' /* A^X vm P UMIl-tt

Louis Branch. by National Lead Coaipany of California, in addition to turn-in value of old car replaced, for the purchase of a Ford coach for use at its Seattle warehouse.

Would say that applying these film directly to the akin and keeping In continued contact nig ht lead to a dermatitis In tone fen individuals, partly because of the imperviousness of the filn and partly because of the sensitising action which the flln night cause In sane fen Oases* We have patch tested VU-1900 dear on 151 human subjects end found that In 13 per cent of then sene sensitisation reactions did occur* We hare not patch tested IB-1925, but have the basio resin,the IXHW, and found that it did eauoo a Slight reaction In 8 per cent of the subjects.

GM objects because the interrogatory is vague, a ambiguous, argumentative and is not reasonably calculated to lead to the discovery of admissible evidence.

I wish you had given me some idea in your letter as to your opinion of the conditions present in the Lead Ethyl area as you found them this time.

Large 32-foot diameter spray dryer used by leading manu facturer for producing high alumina particles for spark plug bodies. 3.

21, requesting that the privilege of using the Anaoonda brand in connection with the sale of Anaoonda .vhite Lead be granted you under the terms of the oontraot between this Company and The Glidden Company.

Would say that applying these films directly to the skin and keeping In continued contact night lead to o dermatitis in seme few indiTiduals, partly because of the lmperviousneas of the film and partly because of the sensitising action which the film might cause In some few oases.

Revisions have not been made to the existing lead and acrylonitrile films at this time.

Abex objects to this Interrogatory as irrelevant, immaterial and not likely to lead to the discovery of admissible evidence.

>een developed is leading to great economies in manufacture.