13 



The geograpliical method will also be adhered to In arranging 

 and describing the igneous rocks. For instance, all the rocks 

 intrusive in the ilawkesbury series, and those characterising 

 the New England tableland, will respectively be placed together, 

 without regard to their classification as objects. The sedimentary 

 rocks, like the fossils, are arranged according to their geological 

 age. 



The provision made for the special requirements of students is Students, 

 at present limited. In two cases (33, 34), immediately to the 

 right of the entrance, will be found specially arranged collections 

 ■of minerals and of fossils respectively. The physical properties 

 of minerals, such as sfreaJc, liar dness, form, &c., are illustrated 

 by carefully chosen specimens ; while the possibility of identi- 

 fying certain minerals, such as quartz, garnet, &c., by their 

 crystalline form is similarly demonstrated.* No attempt is 

 made to deal with Crystallography. The fossils comprise only those 

 forms that are characteristic of the Sedimentary Formations of 

 New South Wales, and are intended especially for mine managers 

 and others who desire to recognise the f ossiliferous formations 

 they are working in without concerning themselves with zoological 

 classification. t There is, further, at the disposal of students a 

 series of typical minerals, rocks, and fossils, the first-mentioned 

 following the order of Eutley's Text-book. To use these a 

 student is required to make personal application for an admission 

 ticket, on showing which the specimens can be freely examined 

 and handled in the private portions of the building. It is hoped 

 that the privilege will be acceptable to those who are not able to 

 attend classes. 



A beginning has been made with a collection of photographs Geological 

 illustrating the geology and mineralogy of the State. Dupli- 

 cates of many of these have been mounted in a large album near 

 the door, and others specially selected have been enlarged and 

 framed. Enlargements are hung on the walls. 



* Copies of fihe descriptive labels used will be found at the end of thi<i Handbook, 

 f A list of the fossils selected will be found at the end of this Handbook. 



