GV A. M. WALKOM. 43 



the author stating in his introduction that the object of the 

 paper "is not to offer the reader any really new material, but 

 rather to present the knowledge we alieady possess in a concise 



form "' JS^evertheless, many interesting points are raised, 



one or two of which bear more particularly on the problem of 

 the Lower Mesozoic, and these will be referred to later. A 

 series of maps accompanies the paper, showing suggested dis- 

 tribution of land and sea in the Australian region during the 

 various geological periods. 



Mr. E. C. Saint-Smith has carried out extensive observations 

 on the Lower Mesozoic rocks in the Koma District, and presented 

 a summary of his results* to the Second Interstate Conference 

 on Artesian Water. These observations cover a very large area 

 of Lower Mesozoic rocks, and fossil plants were found at various 

 localities. The present author had the pleasure of accompanying 

 Mr. Saint-Smith on a reconnaisance-trip over part of the area 

 between Yeulba, Goongarry (Hornet Bank Station), and Roma, 

 and can confirm Mr. Saint-Smith's remarks regarding the strata 

 of that area. 'J'he greater part of the country traversed consists 

 of outcrops of sandstones, with, here and tliere, shales and coal- 

 seams, belonging to the equivalents of the Walloon Series. 



Professor David, in the Federal Handlx^ok for the Meeting of 

 the British Association for the Advancement of Science in Aus- 

 tralia in 1914, refers briefly to the Lower Mesozoic rocks of 

 Queensland, which he classes as Jurassic. 



Mr. R. J. Tillyard has described a number of fossil insects, 

 from Lower Mesozoic rocks in Queensland and New South 

 Wales. t The majority of the insects were obtained from 

 Denmark Hill, Ipswich, in strata belonging to the Ipswich 

 Series, and others from St. Peter's, near Sydney, N.S.W., from 

 the Wianamatta Stage of the Hawkesbury Series. Twenty-two 

 species were described from the Ipswich Series, and six species 

 from the Wianamatta Beds. 



The insects appear to be of considerable interest from the 



* Rept. Second Interstate Conference on Artesian Water, Brisbane, 1914, 

 p. 19. 



i Queensland (ietjl. Sur\ ., Publication Xu.2r)3. 



