( 417 ) Nmb.ii^* 
PHILOSOPHICAL 
TRANSACTION S. 
Ocloher 25. 1675. 
The CONTENTS. 
j{ [ummary ReUtion comernmg the jdtiempts m^de for difcove ring 
itNorth'Eafi pajfage, A Letter from a Spanifli Frofefonr of 
the t^athematfcks, frofofmg a Ner» place for the Firji ^JMe- 
ridim^ and pretending to evince the Equality of all Natural 
iays^ 4s alJo to Jhevp a way of knowing the True fUce of the 
M^on. Some Anim&dverjiom on that Letter by an Englifh ji^ro- 
nomer. An Accmnt of tm Books --^ 1. Jacobi Earner i, JP/?. £^ 
^led.D.Auguftani, Prodromm SENNERtl NOVh&c. 
II. A Defcription of Heliofcopes, and fome other Inllruments 
made byKMook^&c^ 
j4 fummary Relation of what hath been hitherto difcovered in 
the matter of the North-Eajl pajfage \ communicated by a good 
Hand. 
IT is fufficiently known to thofe who have made any infpeftion 
into the Navigation of this and the former Age , how ftudi- 
oufly and foUicicoufly the Lords of the United Netherlands hdivc^ 
for thefe eighty years and raore, laboured to encourage thofe 
that fliould firft difcover a more compendious and fliorcer palTage 
by the North to China^ Japon^ and other Oriental Countries. 
But thofe who firft adventured upon this Enterprize, found by 
fad experience, that the fuccefs anfwcred not their expeftation 
and hopes: whofe calamitous encounters I fliall not go about 
to recite , fince their own Narratives have run through moft 
hands. 
li i Thofe 
