Notes on South Australian Plants. 183 



7. The method of inking the whole surface after exposure 

 while dry, and wetting afterwards. 



3. The method I have adopted of applying the ink forcibly 

 in the press. 



9. The advantage taken of the coagulability of the coat- 

 ing of albumen, which can only be turned to account when 

 working as I do on paper. 



10. The superior quality of work insured by glazing the 

 sensitive surface. 



11. The unlimited number of transfers which can be made 

 identical in every respect. 



12. The astonishing rapidity with which work can be got 

 through. 



13. The superiority in the actual quality of the work. 



14. The advantage taken of the swelling power of the 

 gelatine in cold water. 



In this paper I have, as above stated, adhered to the de- 

 scription of that particular form of my process applicable to 

 the reproduction of maps, plans, and pen and ink sketches. 



I hope on some future occasion to enter more generally 

 into my subject, and show what may be done on grain 

 stones towards the production of tints and shades, and also 

 to lay before the Philosophical Institute of Victoria the 

 results of some purely chemical investigations connected 

 with operations of the kind I have been describing. 



Art. XVIII. — Notes on the Plants collected during Mr. John 

 Macdouall Stuart's recent Expedition into the North-west 

 interior of South Australia. By Dr. Ferdinand Mueller. 



(Read before the Institute, January 9th ? I860.] 



HAViNGbeen entrusted by Samuel Chambers, Esq., of Adelaide, 

 the principal promoter of Mr. Stuart's last expedition into the 

 north-west interior of South Australia, with the examination 

 of a small but very interesting collection of plants gathered 

 during that journey, it occurred to me that a few general 

 remarks on the vegetation of the country recently explored 

 might interest this meeting, 

 t 



