d hence apples, cooked or raw, are
allowable, as the sugar they contain is in this form. The question of
milk is somewhat disputed; but it is usual to exclude it from the rigid
diet, allowing a certain quantity when the diet is being extended.
Thirst is relieved by anything that relieves the polyuria. But
hypodermic injections of pilocarpine stimulate the flow of saliva, and
thus relieve the dryness of the mouth. Constipation appears to increase
the thirst, and must always be carefully guarded against. The best
remedies are the aperient mineral waters.

Numerous medicinal substances have been employed in diabetes, but few of
them are worthy of mention as possessed of any efficacy. Opium is often
found of great service, its administration being followed by marked
amelioration in all the symptoms. Morphia and codeia have a similar
action. In the severest cases, however, these drugs appear to be of
little or no use, and they certainly increase the constipation. Heroin
hydrochloride has been tried in their place, but this seems to have more
power over slight than over severe cases. Salicylate of sodium and
aspirin are both very beneficial, causing a diminution in the sugar
excretion without counterbalancing bad effects.

In _diabetes insipidus_ there is constant thirst and an excessive flow
of urine, which, however, is not found to contain any abnormal
constituent. Its effects upon the system are often similar to those of
diabetes mellitus, except that they are much less marked, the disease
being in general very slow in its progress. In some cases the health
appears to suffer very slightly. It is rarely a direct cause of death,
but from its debilitating effects may predispose to serious and fatal
complications. It is best treated by tonics and generous diet. Valerian
has been found beneficial, the powdered root being given in 5-grain
doses.

DIABOLO, a game played with a sort of top in the shape of two cones
joined at their apices, which is spun, thrown, and caught by means of a
cord strung to two sticks. The idea of the game appears originally to
have come from China, where a top (_Kouengen_), made of two hollow
pierced cylinders of metal or wood, joined by a rod--and often of
immense size,--was made by rotation to hum with a loud noise, and was
used by pedlars to attract customers. From China it was introduced by
missionaries to Europe; and a form of the game, known as "the devil on
two sticks," appears to have been