Show A SILK worms thread is one thou sanath part of an inch thick to BE perfectly proportioned a man should weigh twenty eight pounds for every foot of his height IF a well could be dug to a depth of forty six miles the air at the bottom would be as dense as quicksilver THE average speed of the transmission of earthquake shocks is nearly sixteen thousand feet per second THE idea of an ancient tropical continent at the south pole uniting south america madagascar and australia is arousing considerable interest and discussion in scientific circles two years trial with pine oali and in the suez canal works it has been found that while pine and oak are destroyed by the borer worm the green beart which canies conies from british quiana was unharmed w |