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PROCEEDINGS
OF THE
"thirtieth annual meeting
OF THE
. MEDICAL SECTION
' OF THE
MERICAN LIFE, CONVENTION
` 1940 OFFICERS MEDICAL SECTION
oirmon--D*. A- J. Romsiox, Medical Director. . Connecticut General Life Iniuranee Company,. \ Hartford, Connecticut.------------------------------------
sirmort--D-
T. BtACCToao, Medical
Oiiector, Commonwealth Life Iniuranee Com
pany, Lsuuville, Kentucky. ,
,
Stereery--Da. 8. F. Btxd, Medical Director. Narional Life &l Accident Injurar.ee Company, Najhviile, Tenneajee.'
MemJer of Board of Mcutjerj--D*. T. H. Dicutoh, Medical Director, Minneiota Mutual Life IniuTnee Company, Su FauL Minneiota.
Pro pam Ca2it?L*iS-Da. TlTL^raroK, Medical Diiccto/, h^rrtja: fcife 'Asu/ranec Go. of Canada,
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PLAINTIFF'S EXHIBIT
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the lime physician, (lit ft was Impossible to came to any definite ena-
' elusion and ay, "this mu CA of asbestosis," when his" previous
'disability certificates slowed flu be bid myocarditis or high blood
pressure or cnnrrr or diabetes or pulmonary tuberculosis.
The pathology and X-ray appeinac* of asbestosis ire estirtly different from ailicenis and la flasbsence of a definite history of e> pesur* 'ovt/ a considerable pesd'of time to lsbrrtew dun, th drag. - t| difficult./ A (rest deal of success has bees attaioad is cao(troning duiU in'the plants where asbestos is fabricated so that It ts loot likely that asbestosit wfU ever became an important Ltdustrill /^isease, as far as the cumber tf cases is concerned.
'-"'lac scaraiy ol omul chna oa ubatons mates the prognosis : doubtful. TVe have bad a xmul {roup of cases under ebstrvatio: for
about tea years --there ware iginally, I think, some sixty odd no in this group and we 'still Jure fifty of them where we can jet at them --and some of these show a definite but slow progression as far as can be judged from the Xojr films. However, what the outcjne may be remains to be sees. These men are all working aad show oo alps of acy disability.
In the meantime the plana have beet cleaned trp so that these men are not erposed now to cordirute quxntities of asbestos dust, so it is difficult to say what would have bee: the progress of their disease had their working ennduaas remained the same.
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It may be uil that them Is a very general accord among the leading inverigstors and research authorities in the opinions and ccseJusions presented at the inttmiuonal conferences oo silieosiu (Johan* . ' Besburg, August, 19J0; Cenrvm, Anprit aod-Srptemher, 1SJ1J Such a- difftrmees of'opinion as may ce expressed from time to time do not seriously effect the general agreement on the basic factors affecting the cause, incidence, effects, ikl prognosis of
The eiTrct of silica upon the Kings depends on the nature and extent of exposure. That Is to say, upon (he quantity of dust in the
air breathed by workmen, the amount of free or oncomblsrd silia . In the dust, (be site of the dun panicles, the presence of other sub
stances ia the dust which mar modify the action of silica, aad the * length of time or duration of epoture. The individual himself must
also be considered. Previously misting disease of the lungs, eapreuliy
a tubercle infection, will influence his ruction to inhaled silica. There
* may be other phases of susarpthility about which we knew Utile cr
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