448 Intelligence and Miscellaneous Articles. 



November 3rd.— Prof. W. J. Sollas, LL.D., Sc.D., F.E.S., 

 President, in the Chair. 



The following communications were read :— 



1. ' Certain Jurassic (Lias-Oolite) Strata of South Dorset, and 

 their Correlation.' By S. S. Buckman, F.G.S. 



2. ' Certain Jurassic (" Inferior Oolite ") Ammonites and Brachio- 

 poda.' By S. S. Buckman, F.G.S. 



3. ' The Granite-Ridges of Kharga Oasis : Intrusive or Tectonic ? T 

 By William Fraser Hume, D.Sc, A.H.S.M., F.G.S. 



The author quotes the detailed records given by Mr. Beadnell 

 in his paper published in the Quarterly Journal for February 1909 

 (vol. lxv. p. 41), and although in entire agreement with the facts 

 there stated, differs with regard to the interpretation of those facts. 

 Whereas Mr. Beadnell regards the granite as intrusive, on account 

 of the high dip of the sedimentaries, and the changes which they 

 exhibit as regards colour and hardness, near the granite, the author 

 considers that the dips are due to fold-movements almost at right 

 angles to one another, since they lie on the same line as the crater- 

 like baeins, the rims of which are formed of the compact and steeply- 

 dipping limestones of the Lower Eocene, and he adduces as further 

 evidence the fact that dykes and quartz-veins penetrating the 

 crystalline rocks cease abruptly at the edge of the sandstone. He 

 attributes the bright hues and silicification found near the contact 

 to gases and heated waters acting along the boundary between the 

 dissimilar rock-masses. 



4. ' The Cretaceous and Eocene Strata of Egypt.' By William 

 Fraser Hume, D.Sc, A.H.S.M., F.G.S., Superintendent, Geological 

 Survey of Egypt. 



XLVIIL Intelligence and Miscellaneous Articles. 



CORRECTION TO MR. E. GOLD'S PAPER ON " THE RELATION 

 BETWEEN PERIODIC VARIATIONS OF PRESSURE, TEMPERA- 

 TURE, AND WIND IN THE ATMOSPHERE." 



HPHE denominator in the expression for tan \1> X on p. 33 of my 



-■- paper on Periodic Variations in the January number of 



the Philosophical Magazine, is wrongly given as 

 «(3 cos 2 - 2)(4vi 2 sin 2 4- 1 2 ). 



The coefficient of n should be 



l\3 cos 2 0—2) - An~ sin 2 0(3 cos 2 + 2). 



The values of ^ in the table on p. 34 are unaffected for Z=0, but 



for the other two cases they are as follows : — 



Latitude 0° 15° 30° 45° 60° 75° 90° 



cl=\n 194 197 206 221 243 264 271-5 



^i for \/=» 207 211 224 240 257 270 273 



The phase in the theoretical value of u 2 , at the bottom of p. 34, 

 becomes 344° instead of 374°, and a comparison shows that the 

 theoretical phases of u 2 and v 2 f or Z=|w are in almost perfect 

 agreement with the phases found by Hann from the observations 

 on Santis. E. Gold. 



