17 divided by 4 leaves "1" over; 1 from 3 gives "2;" twice 2 is "4."

83 is 6 dozen and 11, giving 17; plus 2 gives 19, i.e. (dividing by 7),
"5." Total 9, i.e., "2."

The item for August is "8 from 10," i.e., "2;" so, for September, it is "2
plus 3," i.e., "5." Total 7, i.e., "0," which goes out.

18 gives "4." Answer, "_Thursday_."

1676, _February_ 23.

16 from 18 gives "2."

76 is 6 dozen and 4, giving 10; plus 1 gives 11, i.e., "4." Total "6."

The item for February is "3." Total 9, i.e., "2."

23 gives "2." Total "4."

Correction for leap year gives "3." Answer, "_Wednesday_."

LEWIS CARROLL.

* * * * *