No. 424.] 
NOTES AND LITERATURE. 349 
the nordmarkite (II), the pulaskite (III), and the mean between the 
first two (IV) follow: 
SiO, TiO, Al,O; 
Sates gs 17-64 
65.43 +16 16.96 
59.96 .66 19.12 
59.29 .84 17.30 
Fe,03 
FeO MnO 
4.65 .46 
1.53. | 49 
1.73 -49 
3.09 -43 
CaO BaO MgO K,O Na,O P,O; CO, SO; Cl H,O Total 
5.66 .13 2.94 3.10 5.00 .65 .39 .28 .07 1.10 — 99.86 
1.36 ,22. 8:36. $98.02. - .06 04  .82— 99.84 
4.24 .12-. 265° 49r 6:98 t4 08 .14 1.10 —100,17 
3.531 .07 1.58 4.23 547 .34 +20 .17 96 — 99.85 
