1.) That a large proportion of patients
suffering from disseminated sclerosis
give a history of exposure to damp,
especially of the hands and feet.
2.) That a large proportion give also a
history of association with rats at home
or at work.
3.) That a study of the occupation of those
dying of the disease in England and ';ales
in 1925 shows a heavy incidence in those
occupations which would expose the worker
to the above etiological factors.
4.) That the geographical distribution of cases
in isnerica, and to a lesser extent in London
round inland waters is in keeping with the
clinical and occupational findings.
5.) That bacteriological opinion suggests a
leptospira related to leptospira
icterohaemorrhagiae as the casual organism
of disseminated sclerosis, and that there is
a strong probability that these organisms
have an ineffective and a non-ineffective phase.
6.) That in general the association of rats, 'damp,
and disseminated sclerosis is too frequent
to be dismissed as merely accidental) without