173 



this, Maps on subjects not treated of by Professor Berghaus will be 

 constructed by Mr. Johnston, under the superintendence of competent 

 writers, in order that the whole may be in unison with the state of 

 science in Britain up to the period of publication. . 



" No theories founded on mere hypothesis will be introduced. All 

 the Maps, so far as can be ascertained, will embody the results of 

 actual observation and experiment. Indeed, the plan of linear de- 

 lineation provides, to some extent, a guarantee against crude specula- 

 tion, as it compels all systems to assume a definite shape, readily 

 susceptible of direct examination as separate truths, or relatively, as 

 they are in consonance with cosmic al laws universally admitted. 

 There will, however, be introduced on all suitable occasions, such in- 

 ductive data as seem to point at the solution of unexplained phe- 

 nomena — a course, which, it is presumed, is not beyond the proper 

 sphere of the work, and which may not be unattended with advantage 

 to scientific inquiry. 



" But the predominating rule, both in the selection and treatment 

 of subjects, will be utility, in the widest sense of the term. The pro- 

 jectors do not wish to deal with science for abstract purposes ; they 

 wish to deal with it as developing the resources of Nature, and as 

 guiding art in adapting these to the exigencies of Man. They, there- 

 fore, solicit attention to this Atlas, as a repertory of ascertained facts 

 and principles, bearing directly on many of the most important de- 

 partments of human occupation. To the political economist, man of 

 letters, merchant, manufacturer, navigator, and tradesman, the work 

 will be of great practical advantage ; while to the professor and teach- 

 er it cannot fail to be of inestimable service, in materially facilitating 

 the important business of education." 



K. 



Notes on Shropshire Rubi. By the Rev. W. A. Leighton, B.A., 



F.B.S. E. & L. 



(Continued from page 166). 



8. R. cordifolius, W. & N. 



The specimens of the ' Fasciculus of Shropshire Rubi ' belong to 

 the typical or cordate form of this species, as defined in Bab. Syn. 

 and Manual. 



R. affinis, @. Fl. Shropsh. 226, is the ovate or rhamnifolius form. 

 Vol. tit. 2 b 



