xxxvi Contents 



PAGE 



Relation between the temperature of the air and 

 that of the abyssmal water 228 



Also that between the waters at the same depth in 

 the different basins. 



Important observations by the Italian Hydro- 

 grapher, Captain Magnaghi and Professor Giglioli. 

 Great similarity between the abyssmal fauna of the 

 deeper basins with that of similar depths in the open 

 ocean 230 



Serial temperature observations .... 231 



Climatic importance of the Mediterranean as an 

 equalizer of temperature on its shores. 



Table of meteorological data for different points on 

 the coast of the Mediterranean ..... 232 



Nature of the deposits on the bottom of the Mediter- 

 ranean. 



Some analyses of them and conclusion . . .233 



No. 12. ON THE COMPOSITION OF SOME DEEP-SEA DEPOSITS 

 FROM THE MEDITERRANEAN. [From Proc. Roy. 



Soc. Edin. 1891, Vol. xvm. p. 131] .... 234 



This paper is supplementary to the foregoing one. 

 The samples of mud were collected on the Cable route 

 between Algiers and Marseilles which crosses the 

 Mediterranean at its greatest width. 



The paper is a report on the chemical analysis of 

 fifteen samples of submarine mud; and the information 

 obtained is embodied in eight tables. 



Table I gives the position where each sample was 



collected ......... 234 



Table II. Preparation of the samples for analysis 235 



Table III. Determination of Loss on Ignition, etc. 236 

 Table IV. Determination of the amount of Carbonic 



Acid .......... 237 



Table V. Insoluble Residue and the total Silica . 238 



Table VA. Fe^O 3 and A1 2 O 3 in the Acid Solution . 239 



Discussion of Results ...... 240 



Table VI. State of Oxidation of the Iron in the 



Hydrochloric Acid Solution . . . . ^41 

 Table VII. Summary: Percentage Composition of 



the Muds 242 



