62 Cautions in viewing Objects. 
Flyers, to take up and adjuft the Slips; and 
therefore a convenient Place is contrived 
therein to hold them, as the Plate before 
you thews 
CHAP. XV. 
Cautions in viewing Objects. 
*• * 
B EWARE of determining and declaring 
your Opinion fuddenly on any Objedt ; 
for Imagination often gets the Start of Judg¬ 
ment, and makes People believe they fee 
Things, which better Obfervations will con¬ 
vince them could not poffibly be feen: there¬ 
fore affert nothing till after repeated Experi¬ 
ments and Examinations, in all Lights, and 
in all Pofitions. 
When you employ the Microfcope, {hake 
off all Prejudice, nor harbour any favourite 
Opinions; for, if you do, it is not unlikely 
Fancy will betray you into Error, and make 
you think you fee what you would wifh to fee. 
Remember, that Truth alone is the Mat¬ 
ter you are in Search after ; and if you have 
been miftaken, let no Vanity feduce you to 
perfiil in your Miftake. 
* Mr. Cuff, in Fleet-Jlreet, can fupply thofe who do no£ 
care to give themfelves the Trouble of making them, with 
Boxes after this Pattern, which are found by Experience to be 
extremely ufeful: He iikewife makes and fells all the Micro - 
/copes* with their Apparatus , mentioned in this Treatife. 
