COMPLETION OF SETS OF VOLUMES. 
SECOND SERIES.—But a limited number of the Volumes of the 
second series (viz. Volumes VI. to XVII.) remain in stock at the 
Institute, 7, Adelphi Terrace: Members and Associates desiring to 
complete the series have an cpportunity of doing so now at 10s. 6d. 
per volume, Associates paying 6d. extra postage. The Volumes of 
Series I. (Volumes I. to V.) can only be had when the Seventeen Volumes 
are purchased. 
PEOPEE’*S EDIMION, OF, VOLUMES: 
Circumstances of a very special character have enabled the Council to publish 
this valuable volume in the Peorir’s Eprrron : Price (at the Institute’s Office), to 
Members and Associates, Six Shillings and Sixpence. 
CONTENTS : 
On the Terrestrial Changes and Probable Ages of the Continents, founded upon Astrono- 
mical Data and Geological Facts. By the late Evan Hopkins, Esq., C.K, F.G.S. 
On the Credibility of Darwinism. By the late GkorGk WarkINGrTON, Esq., F.C.S. 
On the Credibility of Darwinism. By the late JAMES REppIE, Esq., Hon. Sec. V.L, 
On Utilitarianism. By the late JAMES REDpIE, Esq., Hon. Sec. V.I. 
On the Logic of Scepticism. By the Rev. Roprnson THornTon, D.D., V.P. 
Annual Address (On the Institute’s Work). By the late JamEes Rrppik, Esq., Hon. Sec. V.I. 
On the Relations of Metaphysical and Physical Science to the Uhristian Doctrine of 
Prayer. By the Rev. Professor JoHN Kirk, 
On Geological Chronology, and the Cogeney of the Arguments by which some Scientific 
Doctrines are supported. (In reply to Professor Huxley’s Address delivered at Sion 
College on 21st November, 1867.) By the late J. Ruppre, Esq., Hon. See. V.I. (1867-68.). 
On the Geometrical Isomorphism of Crysta!s, and the Derivation of all other Forms from 
those of the Cubical System (6 lates), By the late Rev. W. MiTcHELL, M.A., V.P. 
COPIES OF PARTS 18 &19 ARE MUCH WANTED AT THE OFFICE. 
