The Epiftle Dedicatory. 



with thfc Variation caufed by the Admirable effipacie of 

 the Magnes ftone. Wherefore to further the Noble fludye 

 of Nauigation and Hydrography , and to giuc o cafion :o 

 induftrious & skilful trauailers by fcaand by land,to make 

 dili&et obferuation of thefe eflfcfts infundry places* wher- 

 by fomegenerallcondufion may beinterrcdj haucheere 

 fct downe whatfocuer I jcgiiidefiridc by cxa&tryall ,and 

 J perfeft 'experiments,^ befides this new property, diuers 

 other rare effe&es that followe this Philofophicall flonc. 

 Wherein although I mayfecrac to haue difcouercd my 

 nakednefTcand want of eloquence and orderly Methode 

 to vtter my conceit cs wnhall,I truft the reader will cither 

 ofhis curtcfietake all thingesfor good that is well ment, 

 or of hisgrauitie not regarding the wordes but the mat- 

 ter » diffcmble my faultcs,and accept of my paines . And 

 whereas amongft diuers learned and expert men in the 

 Mat hpmaticall fciences , to wheme 1 haue imparted thy s 

 fe^ret^ I hauefirttpf all and chiefly from time to tyrae 

 ffiewcd'thc manner of it oi your Worlhippc, which firft 

 gauc occafion that s I fell into the confidcration thereof, 

 arid through who fe encouragement I entrcd into farther 

 examination of the matter , which otherwife I hadncg- 

 )efted:Ifmy trauell hecrein take fuch cffe&c , that others 

 be benefited or pleafured thereby,! haue my defire , and 

 they arcto be thankfttll vntoyou for the fame, for I muft 

 needs afcribe theoccafion to your good counfaile.Tb you 

 therefore as to the moft worthy and bett acquainted wyth 

 thecaufejprefent the firft fight ofthis my rude and fitn- 

 pie draught,which I truft,according to youraccuftqmccl 

 curtcfieand friendly aflfe&ion towardes me,you will take 

 in as good parte 3 as it procccdcs from aharty good 

 will towards you, whom I pray God long 

 to preferue with all incrcafe of Wor- 

 ship to his good pleafure. 



Your Worfhips mod hum- 

 blc,Robcrt Norman* 

 A3 TO 



