516 
EXCHANGES, ETC., RECEIVED.. 
hard as stone, others calcareous and cheesy, or as soft as pulp. 
In veritable cretaceous concretions, M. Dejerine only once ascer¬ 
tained the presence of two or three bacilli; these were used for 
inoculating rabbits, which, after seven months’ interval, were en¬ 
tirely free from tuberculous lesion. In the calcareous cheesy 
masses the cretaceous concretion is always in the centre of the 
cheesy portion. M. Dejerine invariably detected bacilli in the 
non-calcareous part, and they contained more, spores than the 
bacilli of a tuberculous lesion in the process of evolution. 
These remains of an arrested disease of parasitic origin are of 
special interest, as an examination may establish the distinction 
between the cheesy calcareous masses of tuberculosis, and similar 
degenerations found at the necropsies of syphilitic patients. M. 
Dejerine observes that the absence of bacilli does not necessarily 
prove that tuberculosis does not exist; he has been unable to 
detect the presence of a single bacillus, although the necropsy 
clearly demonstrated the presence of tuberculosis. M. Malassez 
says that the spores of bacilli appear or disappear according to 
the coloring substance used. If fuchsine be used they assume 
the appearance of unbroken rods; if gentian violet, of spotted 
rods or a row of seeds. This difference of aspect may be in¬ 
terpreted in two different ways ; it is possible that the substance 
which unites the seeds or spots can be colored by fuchsine and 
not by gentian; it is also possible that the appearance is an optical 
effect due to the nature of the coloring substance .—Medical 
Record. 
EXCHANGES, ETC., RECEIVED. 
Besides the usual medical, veterinary and scientific papers, with which we 
exchange at home and abroad, the editor acknowledges the receipt of the follow¬ 
ing manuscripts: on The Rupture of Vents, with the report of a case in which 
the rupture of a deep femoral vein was successfully treated by ligation of the 
ruptured vessel, by H. B. Sands, M.D.; The Practical Treatment of Abdominal 
Hernia , by W. B. De Garmo, M.D.; Bulletin and Memoires de la Society Centrale 
de Medecine Veterinaire, par II. Bouley and P. Cagny. 
Communications were also received from W. Pendry, C. H. Peabody, 
J. E. Ryder, J. C. Meyer, Jr., D. Dixon, F. H. Osgood, J. Allbright, I. Mich- 
ener, D. P. Yonkerman, Prof. A. Smith, D. St. John, M.D., C. B. Michener, 
A. A. Holcombe, Dr. J. A. Dell, W. R. Howe, J. Lindsay. 
