CONTENTS. 



ARTICLE PACK 



I. — Some Novel Phenomena of Chemical Action attending the 



Efflux from a Capillary Tube. By E. S. Dale, B.A i 



II. — On the Composition of Projections in Geometry of Two 



Dimensions. By James Bottomlby, B.A., D.Sc, F.O.S. ... 6 



III. —On some Undescribecl Tracks of Invertebrate Animals from 

 the Yoredale Rocks, and on some Inorganic Phenomena, 

 produced on Tidal Shores, simulating Plant- remains. By 

 Professor W. C. Williamson, LL.D., F.E.S., President. 

 (Plates I., II., III., IIP.) 19 



IV. — On the Structure, the Occurrence in Lancashire, and the 

 probable Source, of Naias graminea, Delile, var. Belilei, 

 Magnus. By Charles Bailey, F.L.S. (Plates IV.-VII.)... 29 



V. — Notes on the Subgenus Cylinder (Montfort) of Gonus. By J. 



Cosmo Melvill, M.A., F.L.S. (Plate VIIL) 76 



VI.— Memoir of Robert Angus Smith, Ph.B., LL.D., F.R.S., F.C.S., 



&c. By BmvARD Sciiunck, Ph.D., F.R.S., &c 90 



VII. — On a Property of the Magneto-electric Current to control and 

 render Synchronous the Rotations of the Armatures of a 

 number of Electro-magnetic Induction-machines. By 

 Henry W^ilue, Esq 102 



VIII. — On the Influence of Gas- and Water-pipes in Determining the 

 Direction of a Discharge of Lightning. By Henry Wilde, 

 Esq 112 



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