[ 6 95 3 
its thicknefs ; and that, between the finifhing of one 
coat and the beginning of the next, there was fome 
interval of time, and fome fufpenfion of that attractive 
power whereby, or of that component matter whereof, 
the feveral coats are refpeCtively formed. 
Strand, May 8, 1760. H. Baker. 
LXVIII. An Explanatio?i of the Modes or 
"Tones in the antient Graecian Mufc ; by 
Sir Francis Hafkins Eyles Stiles, Bart . 
R R. S. 
Read Decem- 1 ^VTOtwithflanding the valuable edi- 
ber 1750, and I I I . r , 0 r , , 
January, & c . ci. ^1 tlons of the antient mulical and 
1760. J harmonic writers, given by Meibomius 
and Wallis, and the great pains thofe two learned 
editors have bellowed on the correcting the tables, 
and throwing light on the difficult paflages of thofe 
works, there are fome of the doCtrines delivered in 
them, that feem ftill to require a more perfeCt ex- 
planation. Thofe, that refpeCt the tones or modes, 
in particular, feem to have been ill underftood : and 
as it was on thefe, that the effeCts of the antient 
mufic were fuppofed principally to depend, I have 
thought, that the fubjeCt might well merit a re- 
examination. 
Concerning thefe modes, we find two diflinCt, and 
feemingly contradictory doCtrines delivered by the 
antients $ and this it is, which has perplexed the fub- 
jeCtj 
