( 1 ) 
bed by Schemrln i. Letter to. M. G^Jfe^du^s ^ as alfoinall 
thofe 5. whichili. Bevelim hath related ac the end of his Mcr- 
curim in Sole. And that the Arch ^ wluch appeared upon this 
h^Halo^t P.fm,vvasof thenime kind, T^^nhe figure of tf efd 
Arches i> diflferent according to the dift^reot Altitude^. Hie 
Sun 3 -and the feveral Magnitudes of the;I).iaiii^ the, i?^- 
los. Tto when' the Son JS' very iiigh fte Horizon' incM^^m 
Arch appearing upon an 'Qxiimty 'I^^dlo of ,44^ ciegref,s ^ o-;iift 
reprefent astweretwoHorns^as.iojhe VL Figar-^^ , A AC: 
But that the. Sun rifing higher ^ thofe;Hprns.bt'Co:r:c jower in 
proportion 5 ^and Enake ftich' Afches'J'^s^^ jlie' 
fame V I. Figiiiev where each he 5!^ ^'/cf the Siin-is rni^ikM 
near the' Arch,which icisto make: Of v^KiGh'the 'Demonilrdti-^ 
ons were referved tp.the_. fame'Trea^^^^ Parheius . 
rto the place of the .Arches wMr^' they toiicK the///fto , 
being^ more , ftrangly enlighte^ied and^^^colo^red. than;t:he ^rfeft/^ 
maliexh us Judge ^ that/there ^are T^r|l//4 jo 'tlidfe. places, ^ \ - 
Tfo^'the reafonj, whythefV Arche^^ brdioarilyVtouch^ a" 
Tarhelion^\vd.% ^ that the fame' Cyl nders couchant^ which p|p-J 
ducetheArch, produce alfo that ParLelwn^ by themeansof 
their .two round- aod tr'anlpireijt ■Ends , in the fame manner as 
hath b€&n''iaid:df ^ the~ perperidicular Cylinders. , , „ A nd tht\ the 
Parfielibn laft ften at P^w -had beenfdmed' in' thfife couc'^ anc 
Cyliodefs. That that was alfo confirmed , by teafoo that, it 
was brighter in the fuperior and inferior part , thao ady 'wiere^ 
e!fe^ which neceflarily comsto pafs in 2L'lParhdi93 caofed --by, 
Gylinders thus difpofed ^ whereas when prqdilced^'by the round - 
Grains., it muft' appear every wheteeqdaily ft^ 
jhat'in thefe fameCyliiiders^paralkl to the Hoi izon 3 there ''s 
alfb found the Cau(e of the white- Crofs ^ obfoved together 
withthe f^>'^/f/<f;?^'sor MocJ^-moons by M. Heveliu^ , and ex- 
hibited atthe e'ndjdf jiis Mercurimin Sole i the p^rf'en'dicular 
Fillet oi thatCrbfs, copaingfrom the re-fle&ion of the hiys of 
the Moon upon the furface of thefe Cyh riders 5 as the other 
Fillet^ parallel tothe Horifon, is prpddc^d by therefleftion of 
the perpendicular Cylinders which make the great white Cir- 
cle, of which this Fillet is a part. That yet the M_oonmuft 
not be very hig h above the' Hon'zon , to the end. that the cou* ' 
N ■ ching 
