162 
Clakke AX)) WiLLiAALS. — (k’oiofiy of DavHiig JUinge. 
I . — Tntkoductiox. 
The (iiiaiTii's of l^oya, fetatliains, Mahogany Crook and Parker- 
N'illo ill 1ho Darling Rango iioar Perth pi'^^'hu-ed, in 1924, material 
valnt'd at £()8,97d'-^, hut a])]»arontIy no goologioal nia]) or systematic 
<l(‘scriptiun of the sun-oundings of these sourees of wealth has 
over horn ])rodm-iMl, although many short |ui]K‘rs on i)hysiography 
or on details of goologic intcui'st have a])]>oari'd in S(dontific journals 
and govornniont ])ul)li(-ati'.nis. This ]iai>t'r, a tirst move toAvards 
supplying this dclicimu-y, might ho dosc-rihod as “‘Notes to accom- 
pany goohtg'ical and topoga-aphical ma])s of two ty])ical areas 
in the Dailitig' Rang(‘. *’ It is a summary of the field-work done 
hy many studmits at various time's during the period 1921-1920. 
Tlie liohl-work, Avhiedi forjiu'd itart of the ooiirso in geology in 
the Pni\’('rsity of Western Australia, was done ]>artly hy individu- 
als working singly, partly hy groups. It Avould he invidious to 
attempt naming all who took an active' part in the work and 
we' must conte-nt oui'se'lvi's with nu'iitioning those who have made 
indeptendent nia])s .'iiid re-ports on certain se'ctions, namely: W. 
(‘ohi'u. K. i-hnucane, l‘\ i'h)iinan, 1. Harms, A. Hill, ,T. Hosking, 
and K. Owe-Ji. The' (•oni])ilation of the ina]) of the Darlington Area 
t rom data ohtaiiu'd fi'om the hands and Surveys and Land Titles 
De'])ai'tnu’iits Avas done hy Miss l-'h hand)ornc, B.Sc., and Mias P. 
Arinsti'ong. We are much inde'hte'-d to tvressra. N. Bartlett and 
C. FTogartii etf the ahove-named departments and to Mr. ,T. Parr 
of the' U atei' Sujjply Sewe'rage and Di'ainage' De‘])artment for ])lacing 
at e)ur disposal all availalile survey data regarding the areas AAuth 
Avliicli w e' were' coiice'i iu'd. One' of ns (K.A.W. ) did all tlie held 
and lahoratory A\’ork of h’oh'ystenu' .\re'a, ma])])e'd ahout one quarter 
of Darlingtein Ai'ea .and is hirgely i'('sponsi))le for the petrological 
se'ction of the xAa])e'r. 
As is well known, the higher h'vels of the Darling Range 
are almost e-very wlu'ie la terite'-covered, and information regarding 
the foundation reteks must he sought mainly in the Aaiileys ejf 
streams Avhich IniA'e eiit heloAv the hperite Uwel. The Darlington 
^ Information kindly suj)])]ied hy the ( lovi'riiinent Statistician 
