36 JOURNAL OF THE [January, 



and their hoi owed-out interior being filled with calcite : this substance 

 has clearly resulted from the carbacidization of the calci-magnesian silicate, 

 malacolite. Some of the crystalloids are in shape strikingly resembling 

 the " curiously curved canal system " of Giimbel's " Eozoon Bava>icum." 

 (King and Rowney. An old chapter of the Geol. Rec. , p. xxviii, 1881.) 



King, W., and T. H. Rowney. Remarks on " The Dawn of 

 Life," by Dr. Dawson ; to which is added a supplementary 

 note. Ann. and Mag. Nat. Hist., ser. 4, vol. xvii, pp. 360- 

 377, 1876. 



Dr. Dawson, in the work cited, replying to our statement that the 

 laminated character of "'Eozoon" is a mineralogical phenomenon (of 

 which we had adduced instances), asserts that "the lamination is not 

 like that of any rock, but a strictly limited and definite form, comparable 

 with that of Stromatopora." We draw his attention to a specimen of 

 granite from Harris (Hebrides) which consists of alternating laminae of 

 feldspar and quartz, the lamination being strictly limited and of definite 

 form, and even far more " Eozoon " like in this respect than Stromatopora 

 concentricia. The specimen was presented to us by our respected friend, 

 the late Prof. R. Harkness. (King and Rowney. An old chapter of the 

 Geol. Rec, p. xxxiv, 1881.) 



King, W., and T. H. Rowney. On the Serpentinite of the 

 Lizard, its original Rock-condition. Methylotic Phenomena, 

 and Structural Simulations of Organisms. Phil. Mag., ser. 

 5, vol. i, pp. 280-293, 1876. 



The rock in many places has undergone a change into saponite, and 

 occasionally into calcite. The former contains bodies of various kinds, 

 strikingly simulating minute corals, vemiform and foraminiferal organisms; 

 the latter contains cylindrical forms and clusters of spherical bodies, re- 

 sembling Dawson's " Arcluvosphccrime,''' and branching configurations 

 identical with the "canal system" of Eozoon. What appears to be 

 tremolite contains spherical and other bodies wonderfully mimetic of per- 

 forated foraminifers, also rods, consisting of saponite, serpentine, flocculite, 

 or calcite. The rods, especially those composed of the last mineral, throw 

 some light on the origin of the " calcareous " examples of the " canal 

 system " inasmuch as their component mineral carbonate is clearly the 

 result of chemical alteration. The serpentine contains examples of 

 chrysotile passing into the " nummuline " or pectinated condition. (King 

 and Rowney. An old chapter of the Geol. Rec, xliii, 1881.) 



King, W., and T. H. Rowney. On the Origin of the Mineral, 

 Structural, and Chemical characters of Ophites and related 

 Rocks. Proc. Roy. Soc, No. 197. Nature, No. 544, 1879. 



The present work is, to a great extent, based on the original memoir, of 

 which the paper under notice is an " abstract." The latter notices the 

 occurrence of " beautiful examples of 'canal system,' resulting from the 



