Show A japanese paper elates states that a remarkable improve improvement me nt in the breeding of silk worms has been effected by theve of artificial heat beat this fact ie is worthy the notice of utah Experiment a lately made are said to have been eminently successful not only as regards ards celerity of hatching but also in the quantity and quality of tho the silk produced hitherto the heat of f the sun has been trusted altogether and consequent variations of temperature have caused very uncertain P results re |