DESCRIPTION OF A POWERFUL CHECK TO HORSES. 663 
hypertrophy of the heart, curvature of the spine, dilated bronchia, 
and almost all chronic diseases of the stomachy Tuberculosis 
and aneurism do not co-exist; and Rokitansky, as well as others, 
has remarked, that the development of tubercle is arrested, 
although the disease is not subdued, by the pregnant state, as 
likewise by all large tumours of the abdomen. These conclusions 
are derived by Rokitansky from numerous post-mortem and other 
examinations ; and although exceptions may occasionally occur, 
yet, if their main truth be established by subsequent researches, 
they may be rendered available in the history and treatment of 
various affections, and furnish a text for more extended inquiries 
for future pathologists. 
Med. Chir. Rev., Oct. 1842. 
Description of a powerful Check to Horses, invented 
by Mr. Miller, of Edinburgh. 
To obtain an efficient restraint over the horse when startled, or 
otherwise excited into blind reckless speed, has long been a desi- 
deratum. Improvements have been made on the bit and the rein ; 
but we need not say that an infuriated horse will break through 
all those restraints, even though under the guidance of a skilful 
hand : and with the less knowing adroit horseman it is all a for- 
lorn hope in such circumstances. When we heard that Mr. 
Miller of Lothian-street, an intelligent and ingenioas saddler in 
this city, professed to have devised a mode which would prevent 
even the strongest or wildest horse from escaping the controul of 
his rider or driver, we confess we were incredulous, as were Pro- 
fessor Dick, Mr. Wordsworth, and many gentlemen well qualified 
to judge of such matters. Mr. Miller, however, was no way 
discouraged by these doubts, for he had already practically tested 
his invention, and obtained a patent for it. 
To put an end to all suspicions, the patentee made a public 
trial of his invention in Queen-street, and in presence of the two 
gentlemen named, and several individuals of approved horse 
knowledge. For this purpose a strong, active, hard pulling, and 
notorious run-away horse was procured : indeed, the best proof 
of the qualifications of this animal for the trial in question was 
the fact, that a few weeks before it ran away with a gig, from 
which two well-known and respectable citizens were thrown, and 
very seriously injured. 
This animal having been harnessed to a gig, Mr. Miller boldly 
took his seat, though several of his friends were trembling, more 
