Show how s z diamond cuts glass GIM it has been ascertained by a EMO ot of experiments that a diamond did not cot cut glass file fashion but bat NO the particles apart so that a cootie comtiz t ous crack Is formed along the lifler the intended cut the crack oncel mete run gun very bm all force Is nace necess essory carry it through the glass and 0 the piece Is easily broken off superficial crack or cut need I 1 sot dot deep a depth according to fine fi neBs of a t aft o hundredth sufficient to ficia aw one inch Is quite the purpose so that the aal PP cation ol of much force lif in using the arnond only wears out the gem doing the work a any ny better niini stones such p 3 quarto and other 9 brals aral 3 when ground into prop proper er to ik will cut glass like a dejanon diamond d bo alint rj they are not so valuable for te liari hardld iKi rose ose lacking lackin g the requisite e edge ige dece D jud and soon losing the sharp nary ary to malie make the operation a |