286 SCIENCE PROGRESS 



attained before. The publication is an official Dutch produc- 

 tion : and that Holland, a small country in which collieries 

 have played no such national part as they have with us, should 

 possess a Government supporting such palseobotanical work 

 while our own does not, ought to shame us, so much of whose 

 wealth for long past has been derived directly from the Car- 

 boniferous flora, preserved as coal. The Dutch National 

 Herbarium publishes some more of Dr. Jongmans' invaluable 

 bibliographic work in his " List of the Species of Calami tes " ; 

 the same author publishing also two sections on the Equisetales 

 in the extensive Fossilium Catalogus, II. Plantce, with Junk 

 in Berlin. A. Carpentier records Whittleseya from the North 

 of France {Bull. Soc. hot. France, vol. lxi.) ; G. Depape and 

 A. Carpentier describe a number of fossil seeds from the same 

 region {Rev. Gen. hot. vol. xxvii.) ; E. Bureau publishes an 

 appendix to his important Flore fossile de la Basse Loire ; and 

 M. Lindsey describes the branching of Bothrodendron {Ann. 

 Bot. vol. xxix.). A posthumous work of Prof. Potonie's on 

 the " Diathermie einiger Carbon-Farne " appears in the Beihefte 

 bot. Centralbl. vol. xxxii., and there are several minor German 

 papers on Carboniferous plants. 



A number of mining and geological papers give lists or 

 short references to the associated fossil plants ; important 

 among these is the large volume of E. Erdmann, De Skdnska 

 stenkolsfdlten (Sveriges geol. Undersok. ser. c. 1911-15), and 

 W. J. Jongmans' " Palaobotanisch-stratigraphische Studien im 

 Niederlandischen Carbon " {Arch. f. Lagerstdttenforsch.). 



Special work on Coal has been done by Prof. Zalessky 

 {Mem. Com. Geol. Petrograd, N.S. livr. 139), which was reviewed 

 in Science Progress last quarter (p. 73). James Lomax 

 published a well-illustrated paper on the microscopic structure 

 of coal {Trans. Inst. Mining Engineers, vol. 1.), and Prof. E. 

 Jeffrey discussed the Origin of Coal {Journ. Geol. vol. xxiii.). 

 A second and enlarged edition of Drs. Strahan and Pollard's 

 work on The Coals of South Wales was published by our Geo- 

 logical Survey (see also Science Progress, p. 73). 



The nomenclature of the Carboniferous, Permo-Carboni- 

 ferous, and Permian rocks of the southern hemisphere was 

 considered at length in the Report of the British Association 

 for the year, published with useful correlation tables. F. 

 Pelourde considered the geological significance of beds con- 



