of Mineral Species of the T'rimetric System. 53 
In the annexed Table the first column contains a statement of 
the particular dome in the preceding Tables which is here made 
the vertical prism; in some cases the angle of this prism is the 
supplement of that which is given for the dome in those Tables. 
























TABLE IV, A. 
| Prism Pome Dome 
f & 1i. 1%. 
From Table 1 
Chrysolite, Pree eT 115° 36’ | 60° 48’ | 85° 57’ 
MM ge ne se sc. oh 119° 12’ | 64° 24” | 94° 87 
Triphyline, eee er ge eae Vz 118° 27° 8 86 
Peete sar. aa A Pes 121° 55’ | 61° 38 ° 
Dihanitag (58 . acrett ~ 2 tat 120° 4’ | 59°97’ | 89° 26’ 
Do. Eee Gee iaweree ia 120° 33’ | 59° 56’ | 90° 34” 
Diaspore,- - - - - - - -)} Wi 115° 16’ } 61° 18 86° 8” 
Ti aot BOS ay 118° 42’ | 649 447 | 93° 527 
Githite, - -)- - - - - + | 1 | + 118° 67 | 62° 30” | 850. 8 
; 5 RE iia PER as ils seater li 117° 30’ | 66° 54’ 94° 52’ 
Pe ce a ee 115° 26’ | 62° 87° 8’ 
Ti Seat ee Ss ns OE 8 64° 34’ | 92° 527 
Nettie: 2 os ote 6 117° 20’ | 60° 47’ | 87° 527 
Do, Se aes ete oe 1% 119° 13’ | 62° 40’ yA ig 
Wea Sp A gp aie ay" be? BOF eb! ber 
Wo, eae ee ee Ta Bet 08? 881, 498?) 
Bournonite, - - - sts $e 1z ( 15° 61° 46’ 86° 207 
ie rye ee Be! a ge 93° 40’ 
From Table IL. d 
Valentinite, - a a ai 121° 43’ | 76° 30’ | 109° 287 
at fgg Ree Pee Ea Be « 116° 20’ | 78° 20’ | 105° 24’ 
Ribgteatte <A oc ke a Sk, EO 117° 18’ | 76° 22’ | 104° 31’ 
SE Rae te en ot 1z 119° 40’ | 76° 44” | 107° 26’ 
Cemrune 4. x er ae 17 117° 21 5° 58’ | 104° 8/ 
Atiydettes << 2A 218° 35’ | 77° 4!) 107° 22” 
MIRAE s5 owe ta Oe i 115° 63’ | 78° 28’ 1 105°..9/ 
Oe RR a see EEE ie | 114° 8’ | 72° 20’ 52° 
Milohee os. Sgt): te” | (8) 114°.42' | "18°. 2? 7 00" 80’ 
Maes Pa ae 14°19’ | 57° 10’ 
Fiat Pe, Siete a ose Cea li 16° 39’ | 51° 34’ 16° 6! 
Pideapettes nS 118° 32’ | 53° 2! 
Broch reg ee et ee 114° 29’ | 53°19’ | 75° 50’ 
Cotunnii eee SS ee 118° 28’ } 538° 16’ | 80°14” 
From Tabl Fee 
rate meas Uae 17 115° -8’ | 73° 55’. | 99° 40’ 
Mispick sire a Oa ag 120° 46’ | 68° 77 | 99° 2 
attdbariee, Bae iste lz 121° 6’ | 69° 12” {101° 26° 







Comparing the species in Table 1V, A, with those at Table 
IV, we observe the Riiowing affiliations : 
Marcasite and Aurotellurite are near Section Pes oP Rea 
Ss Valentinite to Sulphur (from ‘Table sl pant oat Section 
S$ 
Pua Chit beam (from Table I), with also Man- 
ie, are not coincident with either Section of Table IV, but 
they have approximately the ratio to the Aragonite Section of 
