INTRODUCTION. XXXVll 



foundation, other than that which may arise from corresponding 

 dissimilar structures accidentally associated with each other/' 

 It is too much the habit of eozoonism to represent our evidences 

 in a way to make it easy for them to be overthrown, at the same 

 time ignoring our reiterated corrections, and repeatedly proclaim- 

 ing in full blast that it has " overthrown " its antagonists. The 

 very fact that we consider the " proper wall " to be a modification 

 of chrysotile implies that layers of the latter may occur without 

 displaying any modification of the kind ; therefore we do not 

 dispute that the intersecting " chrysotile veins " referred to by 

 Dr. Dawson are precisely as he describes. Moreover we have 

 nowhere asserted that such " veins are identical with, or 

 similar to, the proper wall of Eozoon" What we contend for 

 is that the " proper wall of Eozoon," in its typical condition, is 

 a modification of chrysotile ; and we again assert that this 

 opinion is completely established by the specimens which Dr. 

 Dawson sent to Mr. Damon (p. 18) as examples of genuine 

 ' ' Eozoon Canadense" They contain no intersecting " veins " 

 of chrysotile : on the contrary, the specimens consist of layers 

 of ' ' chamber-casts," ' ' proper wall/' and chrysotile in perfect 

 parallelism, in the manner exhibited in fig. 2, PI. IX. But this 

 is not all : the chrysotile is present in all stages of development, 

 from the incipient to the pectinated the latter having the aciculse 

 separated by films of calcite, and thus identical with the " proper 

 wall." One of the specimens, which has a sectional face 

 3 inches long and 2 inches wide, contains in its width about 

 80 layers alternately in serpentine and calcite ; nearly all the 

 former are more or less chrysotilized, and have their surfaces in 

 many instances converted into a fringe of typical " proper wall/' 

 Relation of the Canal System to the Tubulation in the 1875. 

 Foraminifera, with reference to Dr. Dawson's ' Dawn of 

 Life.' H. J. Carter. Ann. & Mag. Nat. Hist. ser. 4, 

 vol. xvi. pp. 420-424. 



Dr. Dawson, in his 'Dawn of Life/ states that Dr 

 Carpenter, " in the Ann. & Mag. Nat. Hist, for June 1874, 

 has given a crushing reply to some objections raised in that 



