1869. ] TATE AND HOLDEN—IRON-ORES WITH BASALTS. 159 
Table of Analyses of Pisolitic Ores. 
I. II. Ill. LVe |); VI. 
b g | ¢ 
Constituents. Sp cc = a 
5 =| q 
3 ss —Q —Q 3 = 
SMe twee erence |) 
Me | a 6S Sin | w 
Peroxide of irom .........c0+seseee..2.++e02/40°00 | 45°50 59°40) 77-22) 71-60, 81-50 
Protoxide of iron ......c...eeceseeeeeees 600 Hee OW le eee ooo | IRSHOO, Sos 
Oxide of manganese .............60.-200 tr. Wh || -po000. sod || Ui |) ZRDT 
Mitamiciacidseeeine soil ewsusuicoeee 2-00 i i Fon 
Vanadic acid ............csceeeceesoeece 
Alumina, soluble in acids............ ... | 3:00 2°80 4:20 
| 36-44)... 
Alumina, insoluble..................0.5 ee gen 
cate msolublewesseecasssceseees 910) : ; AN Be 
ilies { SOLA BIOM ee eat ee .. | 0:50 ‘i 10°40) 20°65, 9-00) 8:50 
IMiaomesiala. cr amscecnuccssssucsncnser neces Pea eee | il oeeone Ar of [HS cen | 
Hearne e We Maeeamnci nce sce dor ocwesccdees 0:56] 0:35) __...... ae Sos ‘93 
Water of combination ...............+6- 18-00} 12°65 8:40} 2-138) ... | 1°96 
Percentage of metallic iron ............ 31-50) 31°85 41-58) 54:05)63-70 | 65-20 
dg d = eI g A 
2 2 a S) 9 50 
=) a mH 
Atralyste conten Ser Sores SS me 
S eS | 3 3 ou 
iS) (Ss) Ae iS) o oy 
b> ian) A b> iar) Ay 
The above analyses are of specimens selected as fair samples of 
the iron-ores; the great variation is in a great measure accounted 
for from the samples having been taken from different parts of the 
iron-band. Numbers I and II. are of a mixed character, the others 
containing a greater percentage of iron according to the predomin- 
ance of the spheroids. 
TY. Nature anp Opicin oF THE FERRUGINOUS SERIES AT 
BaLLyPaLipy. 
1. Section at Ballypalidy.—tThe iron ochres of Ballypalidy, which 
are undoubtedly of sedimentary origin, will next occupy our attention. 
Though references have been made to a section of the iron-ore series 
at this locality in the pages of Society’s Journal*, yet we are con- 
strained to submit further observations on the succession of the beds 
there exhibited, inasmuch as incorrect impressions regarding the 
true relationship of the ores to the red bole or ochre-bed and to the 
lithomarge will be formed from a perusal of the sequence of the beds 
as given by the author of the paper referred to. Thus, in the sec- 
tion given on p. 358, the beds are enumerated in ascending (and not 
descending) order; and at p. 361, the plant-remains are stated to 
occur in the red bole; and, again, Mr. Du Noyer, in a paper read 
* Vol. xxv. p. 357: W. H. Baily, “ Plant-remains from beds interstratified 
with the Basalt.” 
