JUNE, 1911. ANALYSES OF STONE METEORITES — FARRINGTON. 211 
the whole emphasizes the impossibility of accurately classifying meteor- 
ites by their physical characters as has hitherto been attempted by 
the German system. 
An interesting feature of the calculations is the indication which 
they afford of the presence of leucite or nephelite or both in some 
meteorites, such as Felix, Shytal, and Cold Bokkeveld. The calculation 
of these minerals was required by the low percentage of silica and sug- 
gests that a careful examination of the meteorites for these minerals, 
which have not been hitherto observed in meteorites, should be made. 
The most common meteorite type is seen from the tables to be that 
of Pultusk, perfemic, dosilicic, perpolic, pyrolic, permirlic, permiric, 
and domagnesic. 
The Farmington type is also largely represented, differing from 
Pultusk only in being domolic instead of pyrolic. Further it will be 
seen by examining the tables that the great majority of meteorites are 
domagnesic and in making the calculations it was found that a pro- 
portion of Mg O to FeO of very nearly 4:1 was highly preponderant 
and characteristic. 
A summation of all the analyses, 125 in number, should give a fair 
average of the composition of stone meteorites. It gives the following 
result: 
AVERAGE COMPOSITION OF STONE METEORITES 
Pg Py ioig gwar a vos <0 whee ASUS BG eiaceys alee a 30 ke 
Als Os; Pn NSE et tot Zizi Pollcilts vive. cede Sys you cues ©. 0) Sfoo ai ple oil eel len’, a eae, os 2.62 
Fe, Os EE MM leis reli sis. vilereuel Bat ciel «. aigtiatais sis scle oo ee gs Vs a we eee 38 
Cro Os; MMe Set S Ts tele (wiles) ‘wie 1e wie) w tel Bivels. eel a boas e Bei woh 6. OW ‘el oS) a6 AI 
ere yr need ssc dT, cone Sg We hbk ed Mo wpe 16.13 
eet ee eee ke poe hh nk ye bees yee ewe 18 
PU Eg oer Fy oye efi pe tein Gali bln ae vie iets a anes a 
Se Sct lL. 5 prea laden Sitdl's Ad k Gales aim ewe Ue aes 22.42 
rhe hoa oe Lac ders a ciate eva sigh ve dived only Ss 24ST 
—~N as Mes. eS sory Sree NS Gi woes Yc Al's a wm woes 81 
= K, tt CR yee). ee) > ain ah aint oe alaaie Grecelale Dela eee 20 
SE Fee. ts ey lk a ww be ee aoe le hele eb ee ee 20 
MT AN TAS aos inh & uke Sole PAS s AEP pee ee I1.46 
SN arate esr, oo po ois weiss) oldie Renee be ee Sele e owl ae rvis 
se bw whore gun GE Ms We wish a Be ww .05 
BE gs 5d zinp api prega eee ew bos a ipl wes 1.98 
Petes ae Ms eT oi 0) 5. cifavake gis pucaenn dra seg -sls eri oye 41a .04 
“a 
eI ec bs a ic Ses peated Mare) pele blew Oa cine oe .03 
ES Nyse 5 = an, lel ope sal goles Gwe vane swe ae eee .06 
RMR ee SR, Naas hv ote wre See Rig le dws ce ee wed 02 
ee Be ea sg wcgiyl wabet 2iv Binlgi ed ponlh wis ete sn qie Sang» 02 
ate eT 5. ioe ones svn ate Ae cw ive Ao ectas & vans oc 02 

