SW/T 
TP 
In rep! 
please quote 
I :.S<. . ^ .. 1 lx sj»O . . .OOyt . O • 
GEOLOGICAL SURVEY DEPARTMENT, 
BATU GAJAH, 
FEDERATED MALAY STATES, 
26'i h'February > 
Dear Henderson, 
I was &lad to hear from you. 
I despatched a copy of the 193 ® 
geological map (just published) to you yesterday. 
Unfortunately, certain areas near Kalumparm and 
in that part of Selangor have been coloured as 
limestone Mils - a printer’s mistake. They 
should be pale blue, Actually they are flat 
alluvial plains with bedrock of limestone and 
graphitic schist hidden under sand and clay. 
I’m sorry, I have never been in the 
Butang group of islands, though I once spent a 
very happy five weeks at Langkawi. T, Hitching, 
now Senior Superintendent Revenue Surveys,, kalacca 
has been at Terutau; write to ask if he can help; 
he will be interested I'm sure. He was Officer 
in Charge Surveys, Kedah. 
I don’t know if Bukit Raja Wang in 
Setulis the same as Gunong Bt.Wang about 1600 
feet, on the boundary? If so, it is limestone, 
4 
There is Jaior? In Siam? I don't know the place. 
Yours sincerely. 
Ivl.R. Henderson Esg. . 
Wat.erf all Gardens, 
Ug PENANG. 
(2.S. Willbourn) 
DIRECTOR, GEOLOGICAL SURVEY, 
Federated Malay States. 
