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 petrological research, and has the advantage of 
bringing 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 FORELOCK 
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 Jowrnal de Conchyliologie for October 1895, and 
dated ‘1st October 1895, appeared in this country on 35rd 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. xxxili., 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 
give their contributors the fair reward of their labours, but-—‘ fair 
play is a jewel.’ 
