( i077 ) 
The Ghromatick Hemitones are the fmallefl: Intervals 
cur Modern Mulick aims at, tho* the A»cients had their 
Enharmonick quarter Notes, which they efteem'd their 
greateft excellency : Thefe may alfo in time be recovered, 
fince we know their proportions y for as the Diatonick 
Tone is divided into Ghromatick Hemitones, fo after the 
fame manner may the Ghromatick Hemitones be divided 
into thofc leaft Enharmonick Intervals, which were ever 
made ufe o£ 
But if we go no further, yet this Experiment demon- 
ftrates the true Theory of Mufick, and brings the practice 
of it to the greateft perfeftion. 
y. ^art of a Letter from the late Sir Philip Skippon, 
JQ^ to the late ^yerend Mr John Ray, micern* 
ing the (Bones of a Humane Foetus Voided thro' an 
Impofiume in the Groin. Communicated to the Tub^ 
lifhery hy Mr Samuel Dale. 
London^ Januarf q2. 1663. 
YEfterday in the Afternnon my Cozen Horf?7el and 
my fclf vilited a Woman 66 years old, in Drury- 
lane^ who had a Child confumed in her Z/teru9 about 28 
years ago 5 She bore two Children after this, one lived 
1 1 yearsjtand the other 6. About 8 yea? s ago m Impc^finme 
broke out in the Right hguem^ and chtn feveral Bones of 
a Dead Child were e^pell'd, (fome of them I lisve by me,) 
She hath a great Swelling now in th&t Gvvm^ wheife flie 
feels fomewhat very hard, which fte fui pefts are Bones. 
I took a particular account of all Cir cum- ratjces 5 bur this 
is proportionable to the narrow extmt uf a Letter, and 
indeed is the fubftance of alh 
