NOTES AND EXHIBITS. 557 



The President exhibited a Fairy Stone, or siderite concretion, 

 ■of a singularly artificial appearance, which was probably due to 

 the axis of the concretion being perpendicular to the plane of 

 stratification of the shale in which it had been formed. 



Also a rude Stone Axe or Mogo from the lower Namoi, the 

 material of which was a kind of Quartzite formed partly of 

 rounded and transparent sand grains, and partly of angular quartz. 

 It appeared to have been formed by the deposit of siliceous matter 

 in a bed of river sand by the percolating water of a hot spring. 



Mr. Fletcher exhibited a small collection of plants collected by 

 Mr. Froggatt at Derby, N. W. Australia. 



Mr. North exhibited the eggs described in his paper. 



Mr. Masters exhibited a collection of Insects from Derby, 

 King's Sound, made by Mr. Froggatt in May last. Of Coleoptera 

 there were 240 species, more than half of them new, but, with 

 very few exceptions, of typical Australian genera. Small Cara- 

 bidce were numerous, but Buprestidce, Getoniidce and other antho- 

 philous beetles were very few. 



He also exhibited from the same collection some Orthoptera, 

 Hemiptera and Homoptera of peculiar form and appearance. 



