THE ZONES OF THE CHALK IN HANTS 



BY 



C. GRIFFITH, M.A., F.G.S., and R. M. BRYDONE, B.A., F.G.S. 



With Appendices by the Authors on Bourgueticrinus and 

 Echinocorys ; and by F. L. KiTCHEN, M.A., Ph.D., on a new 

 species of Thecidea. 8vo. 40 pp. 4 plates. Sewed. 2s. net. 



Two Volumes. Royal Quarto. With Three Portraits and other Plates. 

 Price, in Boards, £2 10s. net. 



Vol. I: pp. i-cxx, 1-597. Vol. 11: pp. i-viii, 1-7 18. 



SCIENTIpic PAPERS 



OF 



SIR WILLIAM HERSCHEL, 



KNT. QUELP., LL.D., F.R.S. 

 INCLUDING EARLY PAPERS HITHERTO UNPUBLISHED. 



Collected and Edited under the direction of a Joint Committee of 



the Eoyal Society and the Eoyal Astronomical Society. 



With a Biographical Introduction compiled mainly from Unpublished 



Material by J. L. E. Deeyer. 



RAY SOCIETY. 



Just Published. For the Sixty-eighth Year, 1911. 



A MONOGRAPH of the BRITISH DESMIDIACE^. I5y W. West 

 and j'rofessor G. S. West. Vol. IV. xiv-f 194 + 66 pages, with ^^ plates 

 (xcvi-cxxviii). 8vo. Cloth. 1912. ^'1 5.;. net. 



(Vols- /-/// each £i ^s. net.) 



THE BRITISH TUNICATA. By the late Joshua Alder and the late 

 Albany Hancock. Edited by John Hopkinson. Vol. III. xii + 114 

 4-34 pages, with 16 plates (li-lxvi). 8vo. Cloth. 1912. I2j-. 6;/. net. 



(Completing tlic 7vo>-k) Vol. /, i2a. 6(/. net ; Vol. II, £i ^s. net. 



PAL^ONTOGRAPHICAL SOCIETY. 



VOLUME LXV. 4to Boards, or in separate parts. £1 Ss. net. May bV had 

 separately at the prices fixed. Containing- 



1. THE PLEISTOCENE MAMMALIA. — MUSTELID/E. With 



Title-page and Index to Vol. II. By rrofessor S. H. 4\EYN0LDS. Eight 

 plates. Sj. net. 



2. THE CARBONIFEROUS GANOID FISHES. 1 art I, No. 6. 



By Dr. R. H. Traquair. Five plates. 5.?. net. 



3. THE FISHES OF THE ENGLISH CHALK. Part VII. With 



Title-page and Index. By Dr. A. S. Woodward. Eight plates. %s. net. 



4. THE CRETACEOUS LAMELLIBRANCHIA. Vol. II, Part VIII. 



l!y Mr. II. Woous. Four plates. \s. net. 



5. THE FOSSIL SPONGES. Title-page and Index to Vol. I. By 



Dr. G. J. HiNDE. IS. net. 



London: DULAU & Co., Ltd., 37, Soho Square, W. 



