ON REMOVING GREASE FROM INSECTS. 335 



Eastern origin, from which part of the world Anime was alone 

 imported; whereas Copal was solely a South American produc- 

 tion. The two substances were often confounded together in 

 commerce. Mr. Raddon likewise made some remarks on rearing 

 Acherontia Atropos. He had had great numbers of the larvae 

 brought to him during the past season, but in the common 

 temperature of his room had succeeded in rearing scarcely one 

 per cent. ; whereas a friend of his had reared eight out of 

 twenty, by placing them in a pinery. The object he had in 

 view was, by rearing from the egg, to trace the history of the 

 insect in its earliest stages, which did not appear to be known.'' 

 Mr. Bain BRIDGE exhibited specimens both of Coleoptera 

 and Lepidoptera, perfectly cleaned from grease by Petroleum 

 without injury. Mr. Shuckard said the method was not new, 

 but was first discovered by Treischkte, and had moreover been 

 published in an English periodical. 



Art. XXXIV. — Note of the Mode of removing the Grease from 

 Insects by the application of Naphtha Petrolei. By W. E. 

 Shuckard. 



Dear Sir, — At the last meeting of the Entomological So- 

 ciety, Mr. Bainbridge brought before the notice of the members 

 the successful use of the Naphtha Petrolei in extracting the 

 grease from injured insects. This was mentioned without 

 stating any authority for its discovery : and consequently those 

 unconversant with its history, would necessarily ascribe the 

 entire merit of it to Mr. Bainbridge. I could not be silent 

 under these circumstances ; and without intending any thing 

 invidious towards Mr. Bainbridge (as appeared to be thought 

 by the tone in which several of the members replied to my 

 observation), I named the original discoverer of this invaluable 

 recipe, which was published at the end of the Preface to 

 Treitschke's Compendium for Butterfly Collectors, in 1834, 

 and attributed to Mr. Dobner of Meinengen. The English 

 Entomologists are constantly complaining that foreigners do 

 not do us justice ; it is, therefore, very bad taste to do that 



* Mr. Raddon also called the attention of the Society to the very remarkable 

 but indubitably ascertained fact, that this insect ha been known to emit its 

 squeaking note while yet in the pupa state. — Editok. 



