Of OXFO%T>^SHniE. i%9 
of Merton College : The folution whereof in all their Cafcs^ as re- 
ceived from the learned and accurate hand of the Reverend Nar- 
ciffu^ Marfb D. D. and Principal of St. Alban Hall, one of the moft 
cordial Encouragers of this Defign^ take as followeth : which 
though fo exquifitely done, that it feems not capable of much ad- 
dition or amendment, yet he modeftly will have called but a (tiort 
E/^aji touching the (efteemed) Sympathy between Lute or Viol 
ftrings. 
20 1. Wherein he firft lays it down as a Fcfiulatum^ that if two 
Lute or Viol ftrings be rightly tuned, the one being touched with 
the hand or bow, the other will anfwer^ or trenjble at its motion, 
which holds alfo in fome meafure in Wire ftrings ; and betv^een Or- 
gan pipes znd Viol firings^ but not between Wire and Viol firings. 
For the clearer folution of which Ph<znomenon in all its cafes^ he has 
laid down thefe two following Principles* ^ 
Princip. i. That firings which areVnifons are of the fame, dra 
proportionable lengthy bignef , and tenfion ; fo that by how much 
any ftringk longer than other ^ caeteris paribus, by fo much 
fmaller^ or more tended and by how much bigger^ b) fo much 
Jhorter or more tended mufi it 3e, to render them Vnifom^ w^^ 
will appear in the following Cfi/e^.Whereunto he premifeth. 
That in firings moved by an equal force^ through a like medium^ 
the difference of ;720/io« does arife from the difference of magni- 
tude and tenfion^ wherefore (x.\ic force znd medium being alike) he 
Premifeth I. Thaty2n;?^5 of the fame a^e move equally faff, 
becaufe they cut the Air with the i^?ime facility. Hence 
2. That the greater any Hring is in diameter (or circumfe- 
rence) the/lower it moves (and on the contrary) becaufe it 
finds the greater refiftance in the Air. 
3. That firings of the (zme length znd tenfion move to the fame 
difiance, becaufe they have the fame compafito play. Hence 
4. Thzt the longer^ or lefs tended, any firing is, the farther it 
moves (and on the contrary) becaufe of the greater com- 
pafi k can fetch. 
Whence he infers this Conclufion^ 
That (in firings moved through the fame medium) the fiviftnefi of 
motion does arifefrom the ^re^^/^r force, and leficize or bignefs ; 
the com '^afi of vibration, from the greater length (or force) and 
