' ( ^194 ) 
concerned iiT the 'publication hereof in your Monethly Bookj 
! pray^ cJir^ ft fuch as fliall defire to make any ufe hereof or 
be further facisfied herein, to Mr* Thomas RaBell at the Jer* 
kers Office in the Cuftome houfej or to the faid Mr. Rafiell dr 
Mr* Francis Dracott atMr. Garrawayei GofFee houfc, where 
they mil be found every Tuefdaj dtudTkurfclay from eleven to 
twelve of theclock, and afterwards the fame dayes in the 
Weft'India-Walkjifon the Exchange* The faid Mr.RaJiell and 
Mr* Dracott being the pcrfons imployed by the Parties con* 
cerned in the management of this Work,they may receive fa- 
tisfaftion from thcm^ that this way of fheathingisascheap as 
the other, much more durablcjand in many refpcfts more be- 
neficial to the Owners, both in point of charge and advan- 
tage infayliog.then any way of (hcathing hitherto i£ed* This 
is all at prefcnt from, Sir 
Weftminft . this jtk xour very humbk Servant 
'^^ John BulHeL 
An Account of two Books i 
I* MVSICA SPECVLATlt^A ^/e/ Mengoli, Dottor dell' una & 
faltra LeggBj & P.P. de fiienze Mechaniche nello Studio di 
Bologna : In Bologna 1 670, in 4*. 
OF this ItalianTrcBtik we could give no fooner notice, 
becaufe it carae but very lately to our hands,though it 
hath been printed three years ago. The famous Author un- 
dertakes to give in it a better account of Mufick and the rca- 
fons of Songs^than has been done hitherto* And wbereag a- 
mong the fuppofitionsof Mufick it hath been received for ao ' 
undoubted Axioraj that Conjonance is made by the frequent 
uoion of two Sounds in ftrikfng the External Drum of 
theEar^ (for he pretends there is another Drum) at one and 
the fame time i he affirms to have difcover d this to be utterly 
f ilfcssod makcth it his bufinefs to prove it in the 4th and 1 7th ' 
fpeculatioo of this Book* In the making of which Difcovery 
he relates to have been affifted by taking an exafi view ofthe 
Organ of Hearing it felf 5 he and his Anatomical friends having 
there taken panicular notice, How the three little bones are 
faftned to one another and to the two Drums jihe External and 
Intcroal, (Aoatomifls having hirhertofpoken but of one on. 
1 
