Show HISTORY OF UTAH BEFORE COLUMBUS To determine the tho rainfall about Salt Lake in the last half balf thousand years cars tho the forest service has devised a new method which should work out to good advantage e. e A tree between and years old has bas been cut wear scar ear Cotton- Cotton canyon and will vill be given i ven a very cry examination Trees it is sai said sails lt grow row according to 19 precipitation It If there thero is a heavy rainfall durin during a growing grow grow- row ing season there thelO will be a different va- va ricy of wood and a different extent of growth between tho the year rings ring'S than if the precipitation is slight The rings in the tree treo marking markinA the tho last sixty years will bo be compared with weather records which have havo been kept that length of lime time and using usinA that as a standard it is figured tho the records for probably half a thousand years back can be secured |