5. 
To rtduce Watches to the right meafure of ddjes^^rto 
know how much thej goe too fafi cr too [low in i^M^rs, 
Here take notice, that the Sun or the Earth paffeth the 
II. SigneSyOt makes an entire revolution in the EcUpick in 3<5y 
daySj 5 hourSj 4P min. or there aboiat, and that thofe daySjteck- 
on'd from noon to noon, are of different lengths 5 as is known 
to all 5 that are verf d in Jfironomj, Now between the Ion- 
geftand the (horteft of thofe days, a day maybe taken of 
fuch a length ^zs 365 fuch days , 5. hours &c. (the fame num- 
bers as before) make upj or are equal! to that revolution: And 
this is cali'd the Equal or Mean day, according to which the 
Watches are to be fetj and therefore the Hour or Minute 
fhew'd by the Watches , tho ugh they be perfedlly luft and 
equal , muft needs differ almoft continually from thofe thac 
are ftiew'd by the Sun , or are reckoned according to it? Mo-- 
tion. But this Difference is regular, and is otherwife call'd 
the Mit^ation^ and here you have a 74^/^? thatfliowsit. 
Q^qqs 
lanua^ 
