Page.

A person having a certain number of counters in each

hand, to tell how inany he has altogether... 81

Several cards being given, to tell which of them a per-

son has thought of

82

Another problem of the same kind

ib.

To make all the cards of the same kind be found toge-

ther, however often the pack may have been

cut

83

The four indivisible kings

ib.

To write down on a piece of paper the heap of cards

which a person will choose.

84

Several cards being presented to several persons, to

guess that which each has thought of .. ib.

Three cards being presented to three persons, to guess

that which each has chosen

84

To tell the number of spots on all the bottom cards of

several heaps, arranged on a table...

86

To name all the cards of a pack.

ib.

To make a person believe you can distinguish the

cards by their smell..

88

A pack of cards being divided into two parts, to disco-

ver whetehr the number in each be odd or

ib.

To tell rhe number of spots on several cards which any

person has chosen....

ib.

A person having drawn four cards from a pack, to tell

the one he has thought of

89

Three things privately distributed to three persons, to

guess that which each has got.......

ib.

To tell, by inspecting a watch, at what hour a person

has resolved to rise next morning

91

Two persons agree to take alternately numbers less'

than a given number, and to add them toge-

ther till one of them has reached a certain

sum, by what means one of them can reach

that sum before the other

ib.

Sixteen counters being disposed in two rows, to find

that which a person has thought of

92

A certain number of cards being showu to a person, to

guess that which he has thought of ...

93

To arrange 30 criminals in such a manner as to save

15 of them, &c...

94

The game of the nosegays

ib.

A man has a wolf, a goat, and a cabbage, to carry over

a river, &c.

95

To dispose counters in the eight external cells of a

square, so that there shall always be nine in

each row, and yet the whole number shall

vary from 20 to 32

ib