17G 



THIRTEENTH ORDINARY MEETING. 

 Royal Institution, 3rd May, 1858. 



DR. INMAN, President, in the Chair. 



The Rev. H. H. Higgins exhibited Corundum from Asia 

 Minor and Naxes, and observed that, owing to the high 

 price of the mineral, efforts were being used to obtain it 

 for commercial purposes fi-om the coast of Coromandel. 



Dr. Edwards exhibited some specimens of aluminum 

 and other substances in the amorphous form, likewise the 

 silicate of soda ; observing, with regard to the last, that 

 it would probably come into very general use for import- 

 ant purposes. Thus it might render garments unin- 

 flammable ; would by its detergent qualities become a 

 useful ingredient in soap; was serviceable in fresco- 

 painting, sizing of calicoes, and as an adhesive cement, 

 where hot water did not come in contact with it. 



Mr. Cocker's new patent Wire-guage was shewn and 

 explained. 



The paper for the evening was then read : — 



ON REARING MACRO-LEPIDOPTERA. 



By JAMES FITZHERBErtT BROCHOIJETS, Esq. 

 In order to make this paper the more thoroughly un- 

 derstood, it may be well here to explain, or rather define, 

 the term Macro-Lepidoptera. 



Entomologists divide butterflies and moths into tAvo 

 sections, tmder the titles Macro-LepichjyUra and Micro- 

 Lepidoptera. 



