op 



l//^2i. 



'' ^Q that fr 



II 



TBE BEGINNIN'GS OF LIFE. 



89 



k 



now 



X 



roiu 



^liat; phenomena are only explicable on the assumption that 

 ^ ^^K. the form and structure possessed by each organism is 



^^P^'^ble of dp^,^ that which is most consistent with the nature and 

 to the 



>eH 



se 



properties ^ of the complex organic molecules, or par- 



a 



'^^ derable portion of the tail had been broken off, and that in the one case 



PCr-SatUrated^ a less, and in the other a greater amount of restoration had taken place. 



In the second specimen, which measured 9^ inches in length, and 

 had'evidently been truncated or mutilated at a distance of about 7^ inches 



formation of ^ 



"[ — J 



by Dr. Hoote; fro^ the tip of the snout, or if inch from the origin of the ventral 



be ^tllU 1 ^^^' ^^ restorative process had proceeded to a much greater length. 



^5 ^^ Although the boundary between the old and new textures was sufficiently 



ncially studfc indicated on the outside of the fish, by the sudden dimimition in the 



and that ^ 



anj 



thickness of the specimen and in the size of the scales, the outline of the 

 posterior extremity of the animal was very well restored, though the whole 



irable COnditk tail was still proportionately shorter than if no mutilation had taken 



to \\^ mrent' P^^*^^- '^^^ restored portion of the tail measured 2 1^ inches in length, 



^ and on dissection showed not only, as in the former case, a reproduction 



1 of lost parE of the notochord, but also of the neural and hsemal arches, spines, and 



nmn;^r;itivel?lli fi^^^supports, these elements remaining, however, entirely cartilaginous, 



^ ^ and being much more irregularly disposed than in the normal tail. They 



to precisely tH; g^^so cease to be traceable after i^ inch from the commencement of the 



new portion of the tail, though the notochord proceeds to its ultimate 



ation iSjinfc 

 Dmcnon whirl 



filiform termination. In addition the spinal cord, the lateral muscles, 

 and the fin rays and their muscles were in this specimen reproduced as 



the line of demarcation between the old and new textures was distinctly 



1 irPS 2L ^^^ ^^ ^^ ^^ scales on the external surface. Both externally and internally 



reproduce a * 



seen. 



seve 



red/ 



2- botli* 



Loc. cit., p. 18 r : — ' For this property there is no fit term. If we 

 accept the word polarity as a name for the force by which inorganic 



ar pS^^ " units are aggregated into a form peculiar to them, we may apply this 



tly ma* "^"Cf 



The 



^QX^ra 



unica 



tion 



name to the analogous force displayed by organic units. But, as 

 above admitted, polarity as ascribed to atoms is hut a name for some- 

 thing of which we are ignorant — a name for a hypothetical property 

 which as much needs explanation as that which it is used to explain. 

 Nevertheless, in default of another word, we must employ this ; taking 



in 



burgh : 



p^jj[' care, however, to restrict its meaning. If we simply substitute the term 



>vhic^ 



^ii ''polarity " for the circuitous expression,*' the power which certain units 



,tens, in ^1' 



-ed it ^'^^ 



\ 



