The Popular Science Monthly, 19. köide

acid action American animal ants appears become blood body carbon carbonic acid carpel Catlinite cause cent chemical colored common copper disease effect electric existence experiments eyes fact feet fish flask force forest fumarole G. P. Putnam's Sons gases give glucose Government heat human hundred inches increase insects interest intermittent beam iodine known lampblack lapilli larvæ less light liquid living lower matter means ment method militant millimetre molecule mound-builders nations nature nest observed obtained organs origin pass persons physical plants practical present private international law produced Professor quantity race relations sacculina says scientific seeds Sir John Lubbock society sound species spectrum substance sulphuric acid surface temperature tion trace trees tube tumulus vapor vibrations Will-o'-the-Wisp