70 N. 8. Maskelyne on Aerolitics. 
own. The two little Bulloah fragments fit exactly together, 
and both fit on to the Piprassi stone. The Chireya stone in like 
manner fits with sufficient precision to that which fell at Qutabar. 
He surmised also that a careful adjustment would succeed in 
uniting all five fragments into a whole; and he indicated as a 
guide to this adjustment, a remarkable vein of iron which ran 
through the Piprassi and the Qutahar stones. I have since tried 
every possible means of effecting this; and though it is not 
practicable to find continuous surfaces of contact on the Piprassi — 
and Qutahar stones, I have been enabled to determine the — 
precise position they must have occupied relatively to each other, 
and have modelled and constructed an intermediate piece which, 
allowing contact of the stones at one part, builds the whole of 
the fragments into one large shell-like piece, obviously itself a — 
fragment of some far larger mass. But this presents also another — 
point of great interest. The Bulloah and the Piprassi stones, at 
the contact surfaces by which they fit together, exhibit no crust, 
though in other respects coated with it. The Chireya and 
Qutahar fragments, on the other hand, present a crust: hardly, if 
at all, distinguishable from that covering the rest of their mass, 
on the very parts that form the faces of junction, and at which — 
they fit with unquestionable precision. These surfaces indeed — 
ooth, and the edges very much rounded off, while those — 
of the Bulloah and Piprassi stones fit together with the exactitude — 
of adjustment with which the portions of a broken piece of oolite — 
wa te be reunited. ; 
efore attempting to draw conclusions from these facts, I will — 
describe the general characters of the several fragments, in ordeT 
that all the data offered by this aerolitic fall may be given i — 
consecutive order. q 
The two that have been preserved out of the five stones that — 
fell at Bulloah are small fragments, fitting on, as before mel- : 
tioned, to one of the long edges of the Piprassi stone. Probably — 
the whole five formed a long bar-like piece fitting on to that — 
: these two would, in that case, constitute the half of1t — 
he Bulloah stones are rounded along their summits and sides, _ 
stones is composed proves, when examined by a lens, to 
a profusion of protruding points of metallic iron. It p 
yellowish-brown ground-mass. It is mottled with i 
dark stains, which surround the metallic iron. This iron, 
iated with a considerable amount of meteoric pyrites, is | oe 
in this aerolite to a very high percentage. It is very ope 
distributed in small, isolated, irregularly formed and sometimes _ 
rystalline-looking particles, not aggregated into a sponge, as iD 
