te, 
Harker: Chemical Notes on Lake District Rocks. 5% 
(49). 61°25. Tilberthwaite quarries: ash-slate. 
(50). 56°60, Hanging Knott, cae Fell: hornstone (altered fine 
tuff); sp.gr. 2°667. | 
45%). 73°45. Upper part of Mena sl Beck: rhyolite intercalated . 
in basalt gro 
| (52). 82°25. Near Hawibwater, Y mile S.E. of Walla Crag ; 
rhyolite, probably altered. 
The following I received from the late Mr. Thos. Tate in 
correspondence, but unfortunately without any precise locality. 
(53). 83°8. Lake District rhyolite [probably with some secondary 
quartz}. 
Finally Mr. Marr has communicated to me the seven given 
below, the work of Messrs. G. MacFarlane and H. H. Thomas. 
In each case the first number given : by the former and the 
second by the latter of the two analyst 
(54). 54°9 and 54 *8 (mean 54°85). ee Force, Crummock ; lava 
n Skiddaw Slates. 
(55). 54°3 and ss 2 Arist +>. Mousegill quarry, Wilton Fell, 
r Egremont; lava with porphyritic augite ; 
x a 2°831I. 
(56). 54°5 aig 54 2 (mean 54°35). E. of summit of Falcon Crag, 
? base of No. 5 of Ward’s section: lava. with 
porphyritic augite. 
(57). 61°2 and 61°5 (mean 61 35) Falcon Crag section, base of 
lava No. 10 of Ward: andesite. 
(58). 57°4 and 571 (mean 57°25). About y seal N.W. of Castle 
rag, Borrowdale : compact lav 
(59). 64°5 and 63°9 (mean 64°2). E.N.E. of Stonethwaits Church, 
orrowdale: garnetiferous rock, ? lav 
{60). 55°7 and 55°9 (mean 55°8). Great Barrow, Siete a highly 
metamorphosed lava resting on the Eskdale 
granite {a different specimen from No. (33)].- 
In conclusion I give a selection of specific gravities of rocks 
not examined chemically, arranging them in numerical order for 
convenience of reference. 
2°852. bad W. side, by road: basalt with porphyritic 
augite 
2°849. Brotto, St. John’s Vale: basalt with porphyritic augite. 
2°837. Matterdale, S.W. of Church: basalt. 
2°833. S.E. of Lanty Crag, Butterwick : bas 
salt. 
2°819. Oliver Gill: metamorphosed porphyritic basalt, close to 
Eskdale granite. 
2°810, Lingmell Gill, at about 500 feet : basalt, porphyritic. 
2°799. Witcham valley, roadside: basalt with porphyritic augite. 
2°791. Clerk’s Leap, Thirlmere: porphyritic basalt. 
February 18 1899. 
