4 JANUARY 1879, page 11

Calculating Power.; [to The Editor Of The "spectator."]

LETTERS TO THE EDITOR. CALCULATING POWER. rTO TOrf: EDITOR OF TiiE SPEcrA F':.C Sirs,-With reference to your account of Mr. Bidder's wonderful powers of mental calculation, the......

Vivid Memory.; [to The Editor Of The "spectator."]

VIVID MIEMIORY. [TO TIlE EDITOR OF THE " SPECTATOR.J] SIR,-The interesting letters of Professor Elliot and ',r. G. i Bidder, together with your own article, incline me to offer......

The "contemporary Review" On Alcohol.

TIE " CONTEMPORARY REVIEW" ON ALCOHOL. THIE discussion on Alcohol, started by the managers of the Coittemporary, has been tedious to read when published in snippets through......