426 Harris Hawthorne Wilder 



I can find as yet no satisfactory interpretation. These are the ones 

 lettered x and x^ in Figs, 11 and 13. Each consists of two narrow 

 slips, the one inserted into the eyeball at the margin of the cornea, the 

 other passing beyond to an unknown insertion farther forward. The 

 free ending of this latter suggests the levator palpebrge superioris, but 

 its position below the eyeball and at a distance from the superior rectus 

 with which it is genetically connected, renders this practically impossible. 

 For any satisfactory study of this muscle its relation to adjacent parts 

 is an absolute necessity and considering the present condition of this 

 specimen, we must wait for the examination of some similar specimen in 

 the future. 



Aside from this the comparison between the two cosmobiotic stages 

 represented by Terata I and XII seems wholly satisfactory and is corrobo- 

 rative of the relationship between the stages of a cosmobiotic series, the 

 investigation into which has been the purpose of this paper. 



Concltisions. 



The word "Conclusions" is almost too ambitious a one to be placed 

 at the head of this paragraph, for it seems to me that we are hardly 

 ready for the formulation of such in the still mysterious realm of 

 Teratology. If, however, I were to attempt any statement that might 

 appear under this heading it would be to place a final emphasis upon the 

 type of being designated here as a Cosmobion, and to assert the mutual 

 relationship of the various examples in the form of several related 

 series. This theory may be stated here in tabular form to serve as a 

 working hypothesis: — 



1. Bilaterally symmetrical beings of both usual and unusual types are 

 not deformities, but are developed in respect to their architecture, 

 by means of a mechanism of control inherent in the germ. Such 

 beings, developing in obedience to definite laws, may be termed 

 CosMOBiA^ or orderly living heings. 



2. In respect to frequency of occurrence Cosmobia may be considered 

 as "normal" and "abnormal", the former being the usual type, the 

 the latter the unusual. Of the latter some may be, in respect to 

 parts, less, and others more than the normal, the "monstra in 

 defectu" and the "monstra in excessu" of the earlier teratologists. 



3. All forms of Cosmobia, both normal and abnormal, may become 

 deformed and misshapen, so that the bilaterality is incomplete, and 



