REVIEW OF BIOLOGICAL SCIENCES. 
225 
vaso-constrictors in the nth, 12th, 13th dorsal communicating 
threads, 1st and 2d lumbars. 
Pneumogastric nerves excited in their peripheric end below 
the diaphragm, produce vaso-constrictors by a complex mech¬ 
anism. 
The excitation of the nerves of general sensibility stimulates 
the vaso-constriction of the small intestine and the vaso-dilatation 
of the colon and at the same time the contraction of the spleen 
and of the kidneys. The excitation of most of the threads 
afferent to the pneumogastric produces on the contrary reflex 
intestinal and renal vaso-dilatation, a double congestion, whose 
clinical manifestation is found in the abdominal painful affec¬ 
tions.— (Ibid.) 
INOCULATION OF THE TUBERCULOSIS OF GALLINACEOUS TO 
MAMMALIA. 
By MM. Cadiot, Gilbert and Rogers. 
The researches of these authors establish that the tubercu¬ 
losis of gallinaceous is easily inoculated to rabbits, that it takes 
with difficulty in guinea-pigs, but after several passages in mam¬ 
malia, may become very active for this last animal and stimu¬ 
late in him, like the human virus, the development of visceral 
granulations ; losing at the same time, its novice action against 
gallinaceous. By its passages in mammalia, aviary virus has 
lost its action upon chickens and has become pathogenous for 
dogs ; an intravenous inoculation has produced in this animal 
the development of small pulmonary tubercles. 
These facts seem to prove that they are two varieties or two 
breeds of a same species and not two different species.— (Ibid.). 
ACCIDENTS PRODUCED BY ASCARIDS. 
By M. V. Chauson. 
The accidents produced by ascarids are : 1st, gastrointes¬ 
tinal disorders ; 2d, nervous accidents called reflex or sympa¬ 
thetic ; 3d, general febrile accidents. The facts observed and 
the conclusions drawn from experiment show that ascarids may 
act upon the organism, not only as foreign bodies, but in pro¬ 
ducing a true empoisonnement. 
Several authors mention the apparition, after the manipula¬ 
tion or dissection of ascarids, of cephalalgy, prurit at the 
head and neck, eruption of vesicles on the skin, conjunctivitis, 
chemosis, coryza, etc. 
The author having injected, in the connective tissue of several 
