A. _Bright_ metal does _not absorb heat_, but _reflect it_ (i. e. throw the heat _back_ again); and as the heat is _thrown off from the surface of bright metal_, therefore, a new kettle is longer boiling. Q. _Why do we wear WHITE LINEN and a BLACK outer DRESS, if we want to be warm?_ A. The _black outer dress_ quickly _absorbs heat from the sun_, and conveys it to the body; and the _white linen_ (being a _bad_ absorbent) abstracts no heat from the warm body. Q. _Why do persons WEAR WHITE dresses in SUMMER time?_ A. White _throws off the heat of the sun by reflection_, and is, therefore, a very bad absorbent of heat; in consequence of which, it never becomes _so hot from the scorching sun_ as dark colours do. Q. _Why do NOT persons WEAR WHITE dresses in WINTER time?_ A. _White will not absorb heat_, like black and other dark colours; and, therefore, _white_ dresses are _not so warm as dark ones_. Q. _What COLOURS are WARMEST for dresses?_ A. For _outside_ garments _black is the warmest_, and then such colours as _approach nearest to black_ (as dark blue and green). _White is the coldest colour_ for external clothing. Q. _Why are DARK COLOURS (for external wear) so much WARMER than LIGHT ONES?_ A. Because _dark colours absorb heat from the sun_ more abundantly than _light_ ones. Q. _How can you prove that DARK colours are WARMER than LIGHT ones?_ A. If a piece of _black_ cloth and a piece of _white_ were laid upon snow, in a few hours the _black cloth will have melted the snow beneath_; whereas the _white_ cloth will have produced little or _no effect upon it at all_. N. B. The darker any colour is, the warmer it is, because it is a better absorbent of heat. The order may be thus arranged:--1. Black (warmest of all).--2. Violet.--3. Indigo.--4. Blue.--5. Green.--6. Red.--8. Yellow: and 9. White (coldest of all). Q. _Why are BLACK KID GLOVES so HOT in summer time?_ A. 1st--Because the _black absorbs the solar heat_: and 2ndly--The _kid_ will not allow the heat of the hand _to escape through the glove_. Q. _Why are LISLE THREAD GLOVES so COOL in summer time?_ A. 1st--Because thread _absorbs the perspiration of the hands_: and 2ndly--It _conducts away the heat_ of our hot hands. Q. _Are Lisle thread gloves ABSORBENTS of heat?_ A. As Lisle thread gloves are generally of a _grey or lilac colour_, they do _not absorb solar heat_. Q. _Why is a PLATE-WARMER made of UN-PAINTED BRIGHT TIN?_ A. Bright tin reflects (or _throws back_) _the heat_, which issues from the fire in rays; and (by reflecting the heat upon the meat) assists greatly in roasting it. Q. _Why would not the tin REFLECTOR do as well if it were PAINTED?_ A. If the tin reflector were _painted_, it would be utterly spoiled, because it would then _absorb_ heat, and _not reflect it at all_. A plate-warmer should be kept _very clean, bright, and free from all scratches_. Q. _Why should a REFLECTOR be kept so very CLEAN and free from SCRATCHES?_