NATURAL DEPOSIT OF ALUMINIUM SUCCINATE IN TIMBER. 325 
The above are the mean of the results of two closely agreeing 
analyses. The oxygen equivalent to the fluorine must be allowed 
for in the above analysis. 
In the foregoing paper I was assisted by Mr. A. O. Black, & 
student in the Chemical Laboratory, who, under my direction, made 
several of the analyses ; Mr. C. Walker, another student, analysed 
the ilmenite; Mr. J. A. Schofield, a.r.s.m., F.c.s., Demonstrator, 
the zinciferous galena; and Mr. J. M. Petrie, Junior Demonstra- 
tor, the fahlerz. 
_ ON 4 NATURAL DEPOSIT or ALUMINIUM SUCCINATE 
IN THE TIMBER or GREVILLEA ROBUSTA, R. Br. 
: By J. H. Marpey, F.u.s., and Henry G. Smira. 
(Read before the Royal Society of N. 8. Wales, November 6, 1895.] 
a THE material upon which this investigation has been made was 
obtained from a Sydney timber merchant who was engaged in 
Cutting up the well-known Silky Oak (Grevillea robusta, R. Br.) 
tnto planks. Finding a deposit in the middle of a log which 
“looked like whiting,” as he expressed it, and thinking it curious, 
he sent it to the Museum, but before the log could be examined 
om whole of the deposit collected, the planks had been sent 
_ 4Way from the mill, and further examination of them could not 
ade. N evertheless, about six ounces of the deposit had been 
_ ‘Secured, the examination of which forms the subject of this paper. 
- large Proportion of the substance must have been lost ; what 
fhe amount was that the cavity originally contained we have no 
hen - knowing. The investigation of this deposit has proved 
interesting, that we would like to take this opportunity of 
“ting the attention of those who are likely to become p 
sy ese Coes ; 
