8o6 SOCIÉTÉ DE BIOLOGIE 



glycogène masquent à peu près complètement le protoplasme cellulaire- 

 et même les noyaux. Ces granulations sont en nombre considérable, 

 presqu'à l'état diffus et à peu près uniformément réparties dans toute 

 l'étendue du lobule. 



Dans les échantillons de foie recueillis après l'injection de pilocar- 

 pine, la quantité de glycogène a très notablement diminué, à tel point 

 qu'en examinant les préparations par transparence il est facile de voir 

 la différence de coloration. La répartition du glycogène qui persiste 

 n'est pas uniforme, mais il ne semble pas qu'une loi régisse cette répar- 

 tition. Dans une série de pièces, le glycogène, relativement abondant à 

 la périphérie du lobule, fait à peu près défaut à son centre; dans d'autres 

 pièces provenant d'un autre sujet, l'inverse se produit, les cellules cen- 

 trales seules possèdent du glycogène. 



a reply to certain criticisms of 

 Prof. Alfred Giard respecting the Bopyrids, 



by Harriet Richardson. 



Prof. Alfred Giard, a master in the knowledge of the Bopyridse, has- 

 done me the favor to examine and criticise the results of my récent 

 studies on that group. Professor Giard has aptly afOrmed that a copy of 

 Bonnier's volume « Contributions à l'étude des Bopyridse » (a) ought 

 to be found in Washington. Unfortunately none of the libraries hère has 

 been favored with his work, — not even the Smithsonian Institution,, 

 wich is very libéral in the distribution of its publications throughout 

 the world. It is to be regretted that the institutions in France hâve not 

 responded to the offer of exchanges from the Smithsonian Institution,, 

 and as a resuit many of Iheir publications are not to be had hère. Before 

 the publication of my « Contributions to the Natural History of the 

 îsopoda » (e) I made every effort to secure Bonnier's work without 

 success. After writing to other libraries in this country, I hâve since 

 succeeded in securing the loan of the volume from the Muséum of Com- 

 parative Zoology at Harvard Collège. 



With the humility of a disciple, I admit that I was in error (as I dis- 

 covered before the criticism appeared) in considering that Giard and 

 Bonnier had identified Grapsicepon fritzi with the species of Bopyru^. 

 found by Fritz Millier on an Alpheus (c). The name Bopyrus alphei, 

 it appears, was given by Giard and Bonnier in 1890 (ô) to the form found 

 by MuUer on a species o? Alpheus, but as no description or figure ever 

 appeared until the one I gave in 1900 ('i), îen years later, I think nO' 

 zoologist would quote Giard and Bonnier as the authority of the species,. 



