Contents of History of Physics Group Newsletter
No 30 July 2012

Editorial		2
Meeting Reports
	Rutherford and the Nuclear Atom	3
	100 Years of Cosmic Rays	4
Feature articles
	Kaye and Laby - a Centenary by Anthony Constable	5
	The Nature of Progress in Science  Norman Shepherd	16
	What is in a Symbol?  by Stuart Leadstone	27
Book Reviews
	Keeper of the Nuclear Condcience by Derry Jones	30
	The Fritz Haber Institute  by Norman Shepherd	37
Book Previews
	The German Physical Society in the Third Reich	40
	Hutchie - Life and Works of Edward Hutchinson Synge	41
Museums
	Optica, Kassel, Germany by Colin Axon	42
	MOSI, Manchester by Malcolm Cooper	45
Meetings
	Histelcon, Pavia, Italy	46
	Next Group Meeting	47
Committee and contacts		48