The elements of natural philosophy : copiously illustrated by familiar experiments and containing descriptions of instruments, with directions for using : designed for the use of schools and academies (1856)
Sprague, A. W. (Alfred White), 1821-1891 · Boston : Phillips, Sampson & Company · leaf 344
at B. Of imperfect conductors of heat, common air, a type of thegases, afibrds one of the best examples. It is from this causethat clothing formed of loose fibrous materials, as wool, furs,etc., which hold between their particles large quantities ctf air,is warmer than that formed from the more… … Why are many of the implements used about a fire provided with woodhandles ? Why does a bar of iron feel colder or warmer to the hand than apiece of wood or cloth? What is said of air as a conductor of heat? Whyare furs and woolleus warmer than cotton and linen fabrics ? CONDUCTION OF LIQUIDS. 339…
Physics
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![An illustration from Mundus subterraneus, in XII libros digestus : qvo divinum subterrestris mundi opificium, mira ergasteriorum naturae in eo distributio, verbo [pantamorphon] Protei regnum, universae denique naturae majestas & divitiae summa rerum varietate exponuntur, abditorum effectuum causae acri indagine inquistae demonstrantur, cognitae per artis & naturae conjugium ad humanae vitae necessarium usum vario experimentorum apparata, necnon novo modo & ratione applicantur. Ad Alexandrum VII. pont. opt. max. (1678)](https://img.insideoutlibrary.com/img/200/ia-mundussubterrane02kirc-310-162.webp)
