[00:08.756]There's antimony, arsenic, aluminum, selenium,[00:10.879]And hydrogen and oxygen and nitrogen and rhenium,[00:12.992]And nickel, neodymium, neptunium, germanium,[00:14.893]And iron, americium, ruthenium, uranium,[00:17.009]Europium, zirconium, lutetium, vanadium,[00:19.144]And lanthanum and osmium and astatine and radium,[00:21.257]And gold and protactinium and indium and gallium,[00:24.186]And iodine and thorium and thulium and thallium.[00:28.439]There's yttrium, ytterbium, actinium, rubidium,[00:30.555]And boron, gadolinium, niobium, iridium,[00:32.414]And strontium and silicon and silver and samarium,[00:34.544]And bismuth, bromine, lithium, beryllium, and barium.[00:43.053]There's holmium and helium and hafnium and erbium,[00:44.906]And phosphorus and francium and fluorine and terbium,[00:47.304]And manganese and mercury, molybdenum, magnesium,[00:49.174]Dysprosium and scandium and cerium and cesium.[00:51.290]And lead, praseodymium and platinum, plutonium,[00:53.428]Palladium, promethium, potassium, polonium,[00:55.285]And tantalum, technetium, titanium, tellurium,[00:58.476]And cadmium and calcium and chromium and curium.[01:03.006]There's sulfur, californium and fermium, berkelium,[01:05.124]And also mendelevium, einsteinium, nobelium,[01:07.245]And argon, krypton, neon, radon, xenon, zinc and rhodium,[01:09.367]And chlorine, carbon, cobalt, copper, tungsten, tin and sodium.[01:13.887]These are the only ones of which the news has come to Harvard,[01:17.601]And there may be many others but they haven't been discovered.