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Hglit, sections of rocks of igneous origin, among 

 which were granite, serpentine, jasper, pitch- 

 Btone (a very peculiar cystallization), quartz, 

 lava from Mount Hecla : the two last con- 

 taining fluid cavities and a very fine cystalliza- 

 tion of agate, called, from its arrangemeat and 

 gorgeous play of colours, ribbon agate. — Mr. R. 

 Glaisyer showed ova of the toad, a curious 

 fungus, one of the Physo-mycetals, found inside 

 a lump of Turkey opium, various seeds, and live 

 recently-hatched larvaj of the poplar hawk-moth. 

 These last were shown under a very cheap, but 

 remarkably good, four-inch objective, by Nor- 

 man, of the City-road, London. — Mr. Wonfor 

 exhibited various salts crystallized at high tem- 

 peratures, in which either radiating or spiral 

 forms were seen : the most remarkable being 

 aniline, hippuric acid, phloridzine, santonine, and 

 sulphate of copper. In the copper the spirals were 

 as true as if mathematically ruled ; plumules 

 and battledore scales from the males of various 

 families of butterflies, in which they are charac- 

 teristic of sex, i.e., only found on the males. 

 These were illustrative of two papers on " Cer- 

 tain Butterfly Scales characteristic of Sex," 

 published in the Quarterly Journal of Micro- 

 scopical Science. Also drawings and engravings 

 of the same, and the insect porcupine (Tingis 

 hystricellus), which attracted attention at the 

 preceding Meeting of the Society. 

 June 10. — " A Narrative of a Recent Visit to the 

 Volcano in Barren Land, near the Andaman 

 Islands," by Mr. J. Robertson. — This had been 

 communicated to him by a physician, a native of 

 Brighton, stationed in the Andaman Islands, and 



