To the Reader. 



mr Authors Book of Colours, without 

 owning any one of them to Him^ or fo 

 much as naming him or his Book in ei~ 

 ther of thofe Chapters^ nor^ that I re- 

 member in any of the others. Nor did 

 I thinks this pra&ice jujiified by the con- 

 fejjion made in the Preface, importing^ 

 that the Compiler had taken the parti- 

 culars he deliver d from the Writings 

 of others. For^ this general and per- 

 fun&ory acknowledgment neither doth 

 right to particular Author s y nor^ by na- 

 ming them^enables the Reader to know^ 

 whether the things deliver d come from 

 perfbns ft to be credited or not : And 

 therefore^ (ince 'tis but too likely-, that 

 fitch Concealment of the Names^ if not 

 Ufurpation of the Labours of the Be- 

 nefactors to Philofophy^ will prove much 

 more Jvr bidding to many others to im- 

 part their Experiments , than as yet 

 they have to our generous Author ; it 

 feems to be the Interefi of the Com- 

 monwealth of Learning openly to dif- 

 countenance fo difcour aging a practice^ 

 and tojheiv , that they do not thinly it 

 Jit that Pojfejfors of ufeful pieces of 

 A 3 /{now* 



