THE APPARATUS AND HOW USED
H. MOHN. — THe NorrH Ocean. Its depths, temperature and circulation.
24. REGNARD (Dr: Paul). — ReCHERCHES EXPÉRIMENTALES SUR LES CONDITIONS PHYSIQUES DE LA VIE DANS LES EAUX.
G. Masson, Paris, 1891. 4 vol. in-80 de 500 pages.
25. Report of the Scientific Results of the exploring Voyage of H. M. S.
Challenger 1873-1876. London. Eyre et Spottiswode.
JOHN MURRAY and A.-F. RENARD.
Report on Deep sEA Deposirs. 1891.
4 vol. in-4°, 525 pages.
JOHN MURRAY. — À SUMMARY 0F THE SCIENTIFIC ResuLTs obtained at the sounding, dredging and trawling Stations of H. M.S. Challenger, 2 vol.
in-40,
Paysics AND cHeMistey. Vol I. containing. [I William Dittmar. Re- PORT ON RESEARCHES INTO THE COMPOSI- TION OF OCEAN WATER. — II. J.-Y.
Buchanan. REPORT ON THE SPECIFIC GRA- VITY OF SAMPLES OF OCEAN Water. III.