REPORT OF THE VICTORIAN GOVERNMENT BOTANIST. 193 
Mallotus polyadenos, M. Dallachyi, M. repandus, M. Chinensis, M. 
pyenostachys, Macaranga involucrata, Oxylobium Callistachys, Pitheco- 
lobium Sutherlandi, Archidendron Lucyi, Quintinia Fawkneri, Cuttsia 
viburnea, Hakea macrocarpa, Oarnarvonia aralifolia, Dryandra flori- 
bunda, Myrsine achradifolia, Bassia galactodendron, Chrysophyllum pru- 
niferum, C. myrsinodendron, Alstonia verticillosa, A. villosa, A. excelsa, 
Cerbera Odollam, Casuarina Fraseriana. 
In the event of its proving inadvisable to devote the New Exhibi- 
tion building to the intended collections of a general industrial museum, 
it might be advisable to enlarge the Phytological Museum building in 
the Garden, in order that a full display of vegetable objects of indus- 
trial interest may be formed. The absolute want both of space and 
accommodation frustrated every attempt to render my establishment 
also useful in this direction 
During the Intercolonial ‘Exhibition an apt opportunity arose to re- 
present more fully the technological value of many native vegetable 
products, and for this purpose, from the ordinary resources of the 
establishment a laboratory was constructed. I need not detail the 
experiments conducted in reference to the value and percentage of 
many kinds of paper material, essential oils, dye stuffs, wood vinegar, 
tar, wood spirits, and tannic acid, from native plants, especially trees ; 
on all of which ample information was offered in the documents con- 
cerning the Exhibition. These as observations have since 
been continued as far as circumstances permitte 
Appended to this Report are the tables of very extensive series of 
analyses, conducted in detail by Mr. Chr. Hoffmann, in reference to the 
yield of potash in our more gregarious native trees. They show that 
the manufacture of this alkali can be pursued here more profitably than 
in those countries in which the supply of original timber is far less ex- 
tensive than in Victoria. ‘The examination into the yield of iodine 
and bromine in our seaweeds is commenced ; likewise, the yield of 
soda in one of the principal littoral plants is recorded. I have entered 
also on a series of toxicological researches, by which it is hoped the 
nature of those poison plants so injurious to stock will be fully eluci- 
dated 
A supplementary catalogue of the library is also given; many of 
works, however, had to be provided by the Director’s private 
