VI CONTENTS OF VOL. XXXV. FIFTH SERIES. 



NLTMBEE CCXVL— MAT. 



Prof. H. A. Kowland on Gratings in Theory and Practice . . 397 

 Mr. T. H. Blakesley on the Differential Equation of Electrical 



Plow 419 



K. Tsuruta on the Heat of Vaporization of Liquid Hydro- 

 chloric Acid 435 



M. P. Budski on the Plow of Water in a Straight Pipe 439 



Prof. J. Perry (assisted by Messrs. J. Graham and C. "W. Heath) 



on Liquid Priction. (Plate VII.) 441 



Miss A. G. Earp on the Effect of the Replacement of Oxy- 

 gen by Sulphur on the Boiling- and Melting-points of 



Compounds 458 



Notices respecting New Books : — 



Mr. B. Lachlan's Elementary Treatise on Modern Pure 



Geometry 462 



Eevue Semestrielle des Publications Mathematiques re- 

 digee sous les auspices de la Societe Mathematique 



d' Amsterdam 463 



Proceedings of the Geological Society : — 



Prof. J. ~VV. Judd on Inclusions of Tertiary Granite in 

 the Gabbro of the Cuilin Hills, Skye ; and on the Pro- 

 ducts resulting from the Partial Eusion of the Acid 



by the Basic Bock 464 



Mr. "W. S. Gresley on Anthracite and Bituminous Coal- 

 beds 465 



Messrs. Eox and Teall on some Coast-Sections at the 

 Lizard ; and on a Eadiolarian Chert from Mullion 



Island 466 



Mr. T. Eoberts on the Geology of the District west of 



Caermarthen 467 



Lieut. G. C. Frederick's Geological Remarks on certain 



Islands in the New Hebrides 467 



Mr. H. W. Monckton on the Occurrence of Boulders 

 and Pebbles from the Glacial Drift in Gravels south 



of the Thames 468 



Mr. O. A. Shrubsole on the Plateau-Gravel south of 



Eeading 468 



Mr. Clement Eeid on a Possiliferous Pleistocene Deposit 



at Stone, on the Hampshire Coast 469 



On Villari's Critical Point in Nickel, by Prof. Heydweiller . . 469 

 On the Interference-Bands of Grating- Spectra on Gelatine, by 

 M. Croya 471 





