16 NATURAL SCIENCE [July 



and that even the considerable bodies of granophyre so often 

 associated with gabbro in many districts may be due to the squeezing 

 out of the residual magma under greater pressure. Such a hypo- 

 thesis is certainly in accord with conclusions reached by quite 

 different lines of penological research, and has the advantage of 

 brino-ino* into relation a number of facts which are already well 

 known. In this view differences of pressure due to more or less 

 deep-seated consolidation are held to account for the association of 

 the pyroxene-plagioclase-aggregate and micropegmatite, sometimes as 

 contiguous and obviously cognate bodies of rock, sometimes as con- 

 stituents of one and the same rock. 



Taking Time by the Fokelock 



In these days when a determined effort is being made to settle 

 once for all the dates of publication of generic and specific names, 

 and when bibliographers like Mr Sherborn are devoting them- 

 selves to finding out the times of issue of classical works issued at 

 irregular intervals and with no record of their appearance, one is 

 horror-stricken to find a contemporary, held in high esteem by reason 

 of the beauty of its illustrations and the scientific character of its 

 letterpress, doing its best not merely to conceal the dates of the 

 appearance of its fascicules, but actually endeavouring to give a false 

 impression of punctuality. 



The part of the Journal de Conchyliologic for October 1895, and 

 dated '1st October 1895/ appeared in this country on 3rd Sept. 

 1896, and contained the descriptions of several new species. 



In the issue for Jan. 1896, ostensibly published ' 1st Jan. 

 1896,' but received on 21st Dec. 1896, these are referred to 

 in the following form : " [Genus, species, author], Journal de 

 Conchyliologie, vol. xxxiii., 1895," thus giving the impression ■ 

 that they were published before they actually were, and laying 

 traps for the unwary priority-student of the future. We have 

 every sympathy with journals which try by prompt publication to 

 •live their contributors the fair reward of their labours, but — ' fair 

 play is a jewel.' 



