BRANCH_PHYSICAL_SCIENCE			1		# rsh011799 these numbers are used to sort the advances in the 
BRANCH_FLIGHT					2		#			science screen...change the NUMBERS, do not change the 
BRANCH_CONSTRUCTION				3		#			order!!
BRANCH_DEFENSIVE_WAR			4
BRANCH_SEA						5
BRANCH_AGGRESSIVE_WAR			6
BRANCH_CULTURAL_ADVANCEMENT		7
BRANCH_MECHANICAL_DISCOVERIES	8
BRANCH_ELECTRICITY				9
BRANCH_MEDICINE					10
BRANCH_ECONOMICS				11
BRANCH_GOVERNMENT				12
