DR. i*. MTJELLEB'S LITHOGRAMS. 119 



the work before us will be regarded as a most valuable accom- 

 paniment to the Flora Australiensis." The truth of this observa- 

 tion must be evident to every one who has carefully examined 

 the work, for of the sixty-six lithograms presented to the public by 

 the learned doctor, no less than thirty-seven of them are illustra- 

 tions of species common to New South Wales and Victoria, whilst 

 eighteen may be regarded as typical of genera scattered widely 

 over the continent of Australia. In referring to the great utility 

 of the work, therefore, as affording assistance to the student of 

 Australian botany, and enabling him to recognise some of our 

 most interesting plants, it may be well to remark that although 

 the illustrations were "principally designed" for a limited flora, 

 they are in reality of a much more expansive character, and throw 

 considerable light on the obscure structure and remarkable pecu- 

 liaraties of many Australian genera. The importance of this con- 

 sideration may be inferred by consulting the species of the follow- 

 ing genera, as described by Dr. F. Mueller : 



1. Acacia 7. Eurybia 13. Prostantliera 



2. Antennaria or Gnapltalium 8. Gallum 14. Stackkoittia 



3. Sauern 9. Grevillea 15. Stenaniliera 



4. Calotis 10. Mirbelia 16. Stylidium 



5. Cassinia 11. Plantago 17. Tetragonia 



6. Conospermum 12. Pomaderris 18. Veronica 

 Although the identical species of these genera do not occur in 



our immediate neighbourhood, yet they faithfully exhibit the 

 generic characters which associate them with other species 

 familiar to us ; and thus they must contribute and tend materi- 

 ally to assist the student in the labour of classification. If, for 

 instance, the first lithograrn be examined, viz., that of Tetragonia 

 implexicoma, 110 one can fail to observe its striking resemblance 

 to T. expansa or the " New Zealand Spinach," whether, indeed, 

 he regards the general appearance of the plant, or the organic 

 structures developed in the sectional drawings. Hence the 

 student, who is acquainted with Dr. Mueller's lithograms, when 

 meeting with the spinach so common in some parts of our coast, 

 will find no difficulty in ascertaining the genus to which it belongs. 

 Take again the pretty little Bauera figured by Dr. Mueller, and 

 compare it with the species at the North Shore and other places 

 near Sydney, and it will be found that the lithogram connects 



