G. F. Moncldon — Tertiary Plants, British Columbia, 421 



of identification. M. Brasil lias attempted to diminish error 

 by the application of photography to the production of his plates. 

 Herein it seems to us that the results are not quite so successful 

 as they should be, and as they can be made. From our own 

 experience of photographing Ammonites we can tell him that 

 orthochromatic plates destroy all those differences due to diverse 

 colours of the matrix or test, and thus dark or light stains on the 

 fossils do not give the false suggestion of furrow or rib. We give 

 this hint because we are convinced that photography, rightly applied, 

 is the medium for palaeontological illustration. 



The other pamphlet alluded to is the second part of that 

 important work by Dr. J. F. Pompeckj, entitled "Beitrage zu 

 einer Revision der Ammoniten des Schwabischen Jura." l Two 

 genera are dealt with — namely, Lytoeeras and Ectocentrites. The 

 author notices that from Lytoeeras, as previously constituted, six 

 already-named genera, of which Ectocentrites is one, may be sheared 

 off; and then that Lytoeeras is divisible into three groups — 1, of 

 L. fimbriatum ; 2, of L. Villa, Meneghini ; 3, of L. articulatum, 

 Sow. In these groups the author describes several new 

 species, and gives important correction in regard to others ; for 

 instance, what we have long had in mind to do, the correction of 

 the synonymy of Lytoc. cornueopice, Young and Bird — that this 

 species = Lytoc. Siemensi, Denckmann, and is not cornueopice, Wright; 

 and as we have said before this, not D'Orbigny's. For such work as 

 this the author deserves our thanks ; it is most necessary. Herein 

 we may draw attention to one matter which has, in connection with 

 other species, puzzled even English authors — that there were two 

 editions of Young and Bird's work, one published in 1822, the other 

 in 1828, and that the contents of the plates differ considerably. 



Jn one matter we have to correct Dr. Pompeckj. He speaks of 

 Lytoc. confusum, Buckman, as not figured, and that it ma} r well be 

 nothing else than Lytoc. trapeza, Quenst. But it is figured, namely, 

 in 1883, in Proc. of Dorset Nat. Hist. Field Club, vol. iv, pi. iii, 

 figs. 1, 2, along with ten other new species. It would, therefore, 

 take precedence of trapeza, if they were the same : but they are 

 not, as we have stated in the pages of this Journal (Vol. IX, p. 260, 

 1892). They lived, too, at different dates — confusum in the hemera 

 concavi, trapeza two hemeras later (Sonninias). We may remark that 

 at one time the deposits of these dates were all called Soioerbyi-zone ; 

 but the separation of the concavum-zone from the Soiuerbyi-zone has 

 been pointed out some time. 



"VII. — On Plant Beds of Tertiary Age in British Columbia. 

 By Geoffrey F. Monckton, Esq. 



1THE following notes refer to the fossils found by me, during the 

 last two years, in the Tertiary strata of Burrard Inlet, British 

 Columbia, and to the enclosing rocks themselves. These fossils were 

 derived from beds outcropping within four miles of the city of 

 Vancouver. The strata consist of sandstones, mudstones, shales, and 



1 Stuttgart. E. Schweizerbart'sche Verlagskartdluug, 1S9G, pp. 9.3-178, 

 pis. viii-xii. 



