, EXTRACTS FROM FOREIGN PERIODICALS. 325 
he stomachic membrane diffusely reddened, and in the ab- 
ominal cavity about a quart of reddish serum. A portion of 
he pleura in this animal discolored, and a portion injested. 
n the pleural cavity a liter of reddish serum, and upon the 
lembrane covering- the lungs, dark brown spots of diminu- 
ive size. Upon transverse section of the lungs these spots 
fere also visible, and were of the nature of haemorrhagic in- 
irctions. Both surfaces of the pericardium were reddened 
nd opaque. External and internal surface of the heart dis- 
olored by extensive ecchymoses. 
Pia mater intensely red, and vessels ramifying beneath some¬ 
what congested. From one and a half to two drachms of 
loody serum was secured from the ventricles; considerable 
f this same fluid escaped the occipital foramen upon 
ecapitation. Very few blood corpuscles found in the urine. 
According to Frohner, the poisonous substance of the 
oney bee is constituted by a mixture of formic acid and a 
oisonous ptomaine. Acetic acid, which is closely allied 
) formic acid, induces symptoms similar to those just 
numerated—Frohner obtained this result with acetic acid 
ijections in a goat. Acetic acid, when incorporated with the 
food, produces haemoglobinuria. On the other hand, some 
f the symptoms recorded seem to indicate their source as 
tomainic. — Monatsh . f. Tliierheilk . 
DIABETES IN THE DOG. 
The literature of veterinary science has recorded diabetes 
:dy in horses, cattle, dogs, cats and monkeys. 
Frohner has personally had the opportunity, within the 
st decade, to note five cases of diabetes mellitus in the dog. 
he last two of these were seen in November of last year, and 
ere brought to the Berlin polyclinic for small animals, at- 
ched to the Royal University of Prussia. 
The first dog, a small six and a half-year-old poodle, had 
town abundant urination a period of four months back, and 
id in spite of inordinate consumption of food, continued to 
naciate ; at the same time the patient experienced great thirst. 
