: “a4. OL. HH. Gulick on the Climate and Productions of Ponape. 
Nad. CaO Al203 Si03 HO 
2:10 787 16°73 58:35 14:93==100°00 
and the results agree very well with the preceding from thi 
argaretville mineral, and also with those of an analysis of an _ 
Iceland epistilbite by Kurlbaum, viz :— 
NaO KO (CaO AbOs Fe2Os  Si0s HO 
781 1710 012 5874  1421=10023 
The formula for epistilbite given by Berzelius is 
. (ROSi0s+Al20s 38i03)+5HO, 
and if RO=Ca0O the corresponding percentages are these, 
CaO 1203 Si03 a 
917 1678 59°32 14 
analyses. recorded above would give for RO, "ENa0-+4Ca0- 
Seine to the formula 
ae NaOSiOs, 3Ca0Si0s-+4(Al202 Be eels 
which aon the percentages, 
C20 ALLOs a es ee 
616 «1649 BBB 1448 = 100, 
‘e—This mineral is very abundant at Port George, — 
y male veins of three inches thickness are seen intersecting 
2s of the cliff: a portion from the interior of a mass, eee 
numbers, in the air-dry state— 
CaO AlOs SiOs ) 
12 1-64 48 15-26 = 100°44, 
which me ee yor the percentages, 
Si03 
1185 a176 5114 15-24 = 100, 
“calculated from the usual formula, 
| 5CaO, 2Si0s-+3(Al20s 2Si0s)+12HO. 
: The crystals agreed in all respects with the published descriptions. 
At oo laumontite occurs colored ee by copper. 
3 V.<:' Phe Cinna and Productions 1 of Ponape or ‘Aseoncon 
Gate an the Pacific Ocean; by L. H. 
LICK. 
a or Ascension Island, is eae in latitude 6° 55’ N., 
di 158° 25' K. It is one of the five “high” islands of 
‘oline range, in that part of Oceanica now so significantly 
a is to Mars nile tom that Quirosa discovered 
3 wa illa from his unsuccessful “oe 
‘Sar is conjectured b: Frey; 
