Royal Society. 291 
begins to be loofe, the part mull be wafhed with warm water 
and foap. • 
Alcanna is the leaf of a plant, dried and powdered, which 
when Itceped a night in wine will dye the nails red. 
To give Iron a Copper Colour; by Sir Robert Southwell: 
Phil. Tranf. N° 249. p. 295. ' 
TA K E of fmall thin copper pieces, cleaned in the fire, 
one ounce, of Apta-fonls three ounces, which being put 
together in a glafs, the copper will be diflblved in three or four 
hours; when u is cold, you may ufe it, by waihing it with a 
feather upon the iron, made clean and imooth, which will pre- 
fently take the colour of copper ; when it comes off by rubbing, 
renew it again; but if you do it twice together, the iron will 
look black. 
7*0 gild Gold upon Silver; Ipy the Same, Phil. Tranf. N" 249. 
p. 29<J. 
BE A T a ducat thin, and diffolve it in two ounces of Aqua, 
Reg-la, then dip a clean rag in it, and let the fame dry, 
and do It over and over untill all the liquor is foaked up, thea 
burn the rag, and with the tinder of it rub the fiiver over, 
ufing a little fpmle with it, and if it happens that tae iilver 
will not take, hold it to the f.re, to dry^off the greale, and 
then it will have the defir'd eftea 
7h- firanre EffeBs reported of the nncient Mufick e^amined-^ 
^j; f£lr. Wallis. Phil. Tranf. 1M° 243. P- ^-91- 
I. TPHE Do6lor takes it for granted, that much of the 
1 reports concerning the great eff.as of mufick m former 
times, beyond what is to be found in latter ages, is highly 
hyperbolical, and next door to fabulous, wherefore, he thmks 
great abatements mud be allowed to its elogies. 2. We muit 
confider, that mufick to any tolerable degree was then, if no. 
a new' at leaft a rare thing,' which the rude people on whom 
It is eported to have had fuch extraordinary e^cas, had 
never he^'d before, and upon fuch a litrle muhck will do great 
?eats • as we find at this day a fiddle or a bag-pipe at a country 
morr ce dance. 3. We are to confider, that their mufick, even 
Xer It came to W degree of perfeaion, was much more 
plain and ilmple than oar's now a-days ; they had not conforts 
^ two, thr.e^ four, or more parts or voices^ Dut one fingle 
inftrument, or fingle voice at a time, which to a rude e^r is 
O 
