232 \V. M. SMALLWOOD. 



Hargitt, C. W. 



'oo A Contribution to the Natural History and Development of Pennaria tiarella 



McCr. Am. Nat., Vol. 84, No. 401. 

 Hargitt, C. W. 



'04 The Early Development of Pennaria tiarella McCr. Archiv f. Entwick- 



lungs., Bd. XVIII. 

 Hargitt, C. W. 



'06 The Organization and Early Development of the Egg of Clava leptostyla. 



Biol. Bull., Vol. X., Apr. 

 Metschnikoff, E. 



'86 Embryologische Studien an Medusen. Atlas. 

 Wilson, E. B. 



'82 The Development of Renilla. Phil. Trans. London. 



POSTSCRIPT. 



CHAS. W. HARGITT. 



As supplemental to the foregoing paper it may not be amiss to 

 add a few brief notes and comments. First, to the effect that it 

 comprises an integral phase of work which has engaged the 

 writer for many years, and which is still in progress. This 

 particular feature was undertaken at my solicitation in the summer 

 of 1906, as stated by the author. Second, at the same time I 

 likewise turned over to my son, G. T. Hargitt, material for work 

 along similar lines, a brief report of which has already been made. 

 (Science, March 12, 1909.) 



Smallwood's paper was completed nearly a year ago, but was 

 at my request delayed, pending completion of further work of my 

 own which was well advanced, and which it was intended should 

 appear at the same time as intimately related thereto. The ap- 

 pearance of a brief note by Beckwith (BiOL. BULL., March, 1909), 

 suggests the desirability of the issue of Smallwood's paper with- 

 out further delay. 



Aside from one or two points suggested by Beckwith I shall 

 not undertake any detailed comments in this connection. Her 

 rather matter-of-course dismissal of my presumed errors as to 

 maturation with the remark that it was due " simply to the fact 

 that eggs were not collected at the right time of day " is, to say 

 the least, somewhat gratuitous ! One does not usually follow in- 



