Contents xxvii 



PAGE 



Difference between the muds in the open sea and 

 those in semi -enclosed lochs and in inland lakes . . 151 



Laboratory experiments, bearing on this subject, 

 made in 1881, using pairs of compounds of the metals 

 oi the Pron group ....... 152 



Ferrous Sulphide and Ferric Oxide. 



Manganous Sulphide and Ferric Oxide . . 153 



Ferric Sulphate and Manganous Sulphide . . 154 



Discussion of these experiments . . . 1 55 



The result of all these observations and experiments 

 leads to the conclusion that the principal agent in the 

 comminution and in the chemical metamorphosis of the 

 mineral matter on the bottom of the sea is the marine 

 ground-fauna . . . . . . . .156 



Opportune appearance of Danvin s work on Vege- 

 table Mould and Earth Worms in the year 1881. 



It showed that similar and parallel work is being 

 done on dry land by earth worms as I had been able to 

 show was being done on the bottom of the sea by the 

 marine ground fauna. 



.Mechanical trituration necessary to produce soil 

 out of mineral matter . . . . . .157 



Hahnemann s discovery of the Dynamization of 

 drugs one of the greatest in the history of medicine . 158 



Consequence of it, alcoholic solutions of colloid, \\ 

 metals officinal in homoeopathic pharmacies for the 

 hundred years. 



ON THE MANV.ANKM; NODULES FOUND ON THE 

 BED OF THE Oci [From Proc. Roy. Soc. Editi. 

 1877, Vol. ix. pp. 287-289] 158 



hort paper gives the results of the first quaut i 



analyses of Manganese nodules obtained during 



voyage of the " ( hallen^ei ." I Miring the voyage I 



vses of samples from almost al 1 



Imt c|u.intit.iti\e analysis was impossible 



on board ship. The " < h.dlcn^er letm n ! to England 



26 May, 1876, and I !<>st no time m pi<>< eedmg to the 



serstudy of the Manganese format i >ns. The results of 



typical specimens t 



dr the ocean are given m tins paper, 



ppcared in the year 1878. 



General appearance of these nodules. 



B in. c 



