l!u'!n^^X?nl7yTS'] IMiostd foT Photomierogvajphy. 27 
wood, and clothe myself in sackcloth and put ashes on my head than 
any longer bear the shame and degradation which would fall upon 
me if such an event were possible. But if the reverse be the case ; 
if this fungus theory be not true ; if it be, as I pronounce it 
to be, another of those fallacies with which the subject, not only 
of cholera but of other diseases, has been surrounded ; if the view 
which I am proposing to you now is more correct than the other 
views which have been proposed, then, Gentlemen, I claim for 
myself the merit of having, in times when pathologists did not 
dare to pronounce an opinion, ventured to pronounce mine, and 
of not having carried on two shoulders. At the meeting of 
the German Association of Physicians at Frankfort, in Septem- 
ber, 1867, Professor Yirchow mounted the tribune, and in an 
oration in which he professed to describe the progress which patho- 
logy had made in recent times, stated that he had not had an 
opportunity of making up his mind on the subject of the cholera 
fungus. And yet he had lived in the town of Berlin, where 
thousands of cases of cholera of the most severe type had shortly 
before occurred. Other pathologists have observed a similar bearing 
towards the new doctrine. But this slowness of supposed leaders 
has not prevented the practical men of our profession to form their 
own conclusions. I have spoken to many practical men, and all of 
them have shaken their head at the fungus theory, and none of them 
have allowed it to be of such a nature as to bespeak their confidence. 
Therefore we may dismiss it, and we will continue our own path 
and our own studies, from which we hope to establish better results 
than those arising from any previous hypotheses or investigations. 
III. — Heliostat for Fhotomicrograjpliy . By E. L. Maddox, M.D. 
(Plate 11.) 
The accompanying valuable communication (page 29) on a cheap 
form of heliostat, has been lately forvv^arded to me and offered for 
publication in the Journal of the Eoyal Microscopical Society, by 
Lieut.-Colonel J. J. Woodward, M.D., Army Medical Department, 
Washington, U. S. To it I venture to prefix the plan adopted by 
myself, as it differs in a few minor particulars to suit the position in 
which it has to be placed. 
Mr. Eutherford's arrangement, as now modified by Brevet- 
Major Dr. Curtis, appears exceedingly perfect. 
In 1867, Professor Laurence W. Smith, Kenyon College, 
America, when in England, showed me a drav/ing of a form he 
had adopted which was very simple in its construction, and later, 
furnished me with full particulars. The base or support being in 
the form of a long cross set in the direction of the meridian of the 
