Proceedings, Volume 32

acid action angles apparatus appear applied approximately average axes axis calculated cent centre co-directional co-linear combination common complete connected considerable considered constant containing crystal curve deflection demagnetisation determined diameter direction Edin effect equal equation equivalent evidently examined experimental experiments expression eyes field figures fogs fragments given gives gyrostat Hence inches increase indicated less light magnetic magnetisation material maximum means method minute nature normal nuclei observations obtained occur operation origin parallel particles pieces plane plate position possible practically present pressure probably Proc Professor Read referred regard relation represented reversal relatively right angles rocks rotation round shown side solution specimens Station structure sulphur surface symmetry TABLE taken temperature turn twin values xxxii