xvi CLASSIFIED SUMMARY OF THE CONTENTS OF YOLS. I-VI. 



PORIFERA. 



HEXACTINELLIDA . . -By R. KIRKPATRICK . Vol. III. 



TETRAXONIDA . . . By R. KIRKPATRICK IV. 



CALCAREA By C. F. JEXKIN. B.A IV. 



BOTANY. 



H MUSCI. 

 By JULES CARDOT . . ,, III. 



MARINE ALG.E. 



PH^EOPHYCE.E AND FLORIDE.E By A. aud E. S. GEPP III- 



CORALLINACE.E . . . By M. FosLIK ,, HI. 



FRESHWATER ALGyE. 

 By F. E. FRTTSUH, D.Sc., Pn.D., F.L.S. VI. 



LICHENES. 



By DR. OTT<> YK.RMON DARBISHIRE . . ,. V. 



GEOLOGY AND MINERALOGY. 



FIELD-GEOLOGY . . By II. T. FERRAR, M.A., F.G.S. I. 



UOCK-SPECIMENS. . . By G. T. PRIOR, M. A., D.Sc., F.G.S. . I. 



