z-jb M E M O I R S £/• f,?.^ 
That thefe were part of the accoutrement of the Roman 
Equites^ rather than of either the Velites or Hafiat'h Mr. ^/ho- 
resby concludes, becaufe that tho' all in general had./liiclds, 
yet thofc of the Velites, who were as the forlorn hope, fecm 
more flight, and are exprefly faid to be e ligno corio fuper- 
hidiitlo'^ thole of the Haft at i are not only laid, e plurlkiS 
lignis ^ ajferculis conftit. &c. but were alfo four foot long 
to cover the whole body, when liooping; of which kind were 
likewife thofe of the 'Principes dnd ^'jtriarii. "Whereas the 
defcription that the anonymous author of Roma ilkiflrata 
with Fabrkhs's notes, gives in his Armatura Equltum, comes 
the nigheft this, Scut tm five 'Tarmam habehant ex bovillo Corio, 
arte leviter^ durata ^ but then he adds, eoque mero nulla 
materia fub]eBa, omitting not only the ornamental ftuds, but 
the ^ iron work which Camillus firfl contrived as a defence 
againft the immenfe fwords of the Gatds. 
The ImperfeElion of an Organ ; by !Z)r. J. Wallis. Phil. 
Tranf. K° 242. p. 249. 
DR. Wallis thinks it is evident, that the pipe in the organ is 
intended to exprefs a diflin6i found at fuch a pitch, that is, 
in fuch a determinate degree of gravity or acutenels^ or (as it 
is now called) flatnefsor fliarpnefs^ and the relative or com- 
parative confideration of two (or more) fuch founds or degrees 
of flatnefs or fliarpnefs, is the ground of (what we call) con- 
cord and difcord 5 that is, a foft or har(h coincidence. 
Now, concerning this, there were amongft the ancient 
Greeks, two (the moll confiderable) feds of muficiansj the 
. Jirlftoxeniaus and ^Pythagoreans, 
They both agreed thus far, that Tila-teffaron and T>ia~ 
pente, do together make up djia-pafon-^ that is, (as wc now 
Ipeak ) a fourth and fifth do together make up an eighth or 
o6i:avej and the difference of thcfe two, viz. of a fourth and 
fifrh, they agreed to call a tone, which is now called a whole 
note. 
Such is that in our prefent mufick of la, mi, (or as it was 
won't to be called re, mi ) for la, fa, fol, la, or mi, fa, fol, la^ 
isaperfeafourth: And la, fa, fol, la, mi, ov la, ml, fa, f oh 
la, is a perfeft fifth 5 the difference of which is la, ml, which 
is what the Greeks call the tDla-zeutlc tone; which disjoins 
two lourths on each fide of it, and being added to either of 
them, doth make a fifth; which was in their mufick, from 
Mefc to 'Paramefe-j that is in our mufick, from A to B; fup- 
pofing 
