ANNOTATIONS 



MADE BY P. B. IN 



"A History of British Hydroid Zoophytes," 



BY 



THOMAS HINCKS, B.A. 



While looking through some of Mr. Rufford's books, 

 I have been much interested in perusing the annotations 

 made by him on the pages. Many of the remarks are 

 exceedingly brief simply three or four words others are 

 of the nature of a short sentence, while a few are somewhat 

 lengthy. A very large number occur in the " Manuel de 

 Conchy liologie," they do not, however, bear directly upon 

 the Oonchological section, p. 107, et seq. in this book. 

 Those which are of most interest at the present moment, 

 are written on the pages of Hincks' " History of the 

 British Hydroid Zoophytes." I have thought that several 

 of the more important annotations may prove of interest 

 to the general reader as well as of value to the student of 

 Hydromedusse. It has been necessary to quote from the 

 text of Hincks' work somewhat extensively, but only so 

 much as to preserve a continuity of idea, and to show the 

 application of P. R.'s remarks. 



Page XL, line 12 from the bottom. 

 Concerning Thread-cells in Ectoderm of Coenosarc and 

 Gonophore, Hincks writes: " The thread-cell is a most 



interesting piece of structure Two kinds of 



thread-cell are often met with on the same species. Besides 



