Numb. 39(J. 
PHILOSOPHICAL 
TRANSACTIONS 
For the Months of Ncvmler^ and December. 1726. 
I. A Jhort Account of Negativo-afflrmative Arkkmeticky 
By Mr.]ohn Colfon, F.R.S. 
II. .EcUpfis Luna ohfervata Romae, ad radices Collis 
Quirinalis, 3 1. O( 3 :obris, 1724; 
per clartffimum Virum Fraticifcum Blanchinum. Ex 
Epiflola Rev. & Cl. Firi^ Johannis Baptiftae Carbone, 
<S. Jef. ad Tfaacum Sequeyra Samuda, M. D. R.S. S. 
Coll. Med. Lond. Lie. 
III. OBfervationes aliquot Gircum-Jovalium hah it a eodem 
Anno 1724; per eundem Cl. Blanchinum. Ex eadem 
Epiflola. 
IV. Ohfervatio Lunaris Eclipfeos Albani halita pofl Oc- 
cafum Solis diei Dominica zi Odtobris, S. N. 1727. 
Ah eodem. Ex eadem Epiflola. 
V. Confpehius Macula Platonis in Luna^ calo clarijfmo.^ 
nohie fequente diem 16 Augufti 1725, hora prima pofl 
Occafum Solis, Rom^e in Monte Palatino, per tudum 
opticum 
