[l28d] 
City cf the World, where the Artifts in preparations of 
that tinging Succus J for dying the Robes and other Veft- 
inents of Emperors, Senators, &c. ftrove to excell each 
other in new falhioned Purples for their own gain, and 
to gratify the luxuriant excefsof the Great ones of thofe 
times,by preparing and mixing the colour (found in the 
feverall lorts of Shells as aforefaid.)This colour fold then 
at great prifes; that which was the fine double dyed Pur- 
ple of Ty^^^ called D/^^^/^A^, yielded looo ]^man De- 
nani the pound, which is computed to be more then 30/ 
Sterling,and this of ours being fo excellent a colour,with 
out other preparation or addition of any thing to it, 
may now or atleafl: hereafter by (farther improvement) 
vye with the Tyrian Purple, Johnjion out of Ariliotle^ 
mentions a fpecies of thefe Fijbes under the name, of 
Littordles queeparv^i^ flore [untruhro\ this agrees with 
ours, which may be nzmcdPurpura IzHoralis (five Tenien- 
fis) parva turbinata. 
Since *-the importunity of fome friends hath haftned 
this difcourfe fooner then I intended, (and fo prevented 
thofe farther experiments, which I might have made this 
next Summer J ^ prefuming on your favourable accep- 
tance, and excufing of the imperfeitions of it, which 
could not befo welldigeflied (in the Method of it^ as it 
might have been,were I not ingaged in publique imploy- ^ 
ment,which requires my dayly attendance j I have there- 
fore now prefented you with it as it is : And if I find it 
gratefull to you, & to fuch others, as fhall happen to read 
it, I (hall beincouraged to impart other things, which 
lefleem no lefs conliderable then this ; to the end that 
the ftupendious works of nature, or rather of the God 
of nature, (in which are clearly feen his infinite wifdome 
power and goodnefs,) may by us, as his Inftruments, be 
celebrated for his glory: In whofefervice I am one of the 
iQ^QioijowT Society WILLIAM COLE. 
Tab. 3 . Fig. 3 , 4, f,^, 7, Several Shells of the Purpura, in 
their Natural bignefs. Fig^ 8. the Operculum. A Letter 
