NOTES AND MEMORANDA. 



85 



In trimming the lamp care should be taken that the wick is perfectly- 

 dry, and the petroliue of good quality ; also that none of the oil gets 

 upon the metallic chimney or reservoir, or a bad smell will be given 



off until the oil is burnt away. In using the lamp it will be found 

 convenient to slightly incline it, so as to bring the broad surface of 

 the flame more parallel with the surface of the mirror of the micro- 

 scope. When it is necessary to re-line the chimney, screw off the 

 slicling portion, wash out the old lining, and re-coat it with suj)erfine 

 plaster of Paris. When dry it will be found ready for use — a few 

 minutes will be found sufficient to do this. 



Photograph of our late President, Mr. Reade. — An admirable 

 photograph of our late President has been executed by Messrs. 

 Eeadell, of 49, Wigmore Street. It is sold at an extremely low price, 

 and as it has been taken comparatively recently, it is a good repre- 

 sentation of the dear old man. 



The Microscope at the next Exhibition. — A meeting was some 

 time since held at the Society of Arts to determine the various classes 

 of objects which it is desirable should be admitted for exhibition. It was 

 resolved to recommend to the commissioners that the following classes 

 of specimens, if prepared and arranged from an educational point of 

 view in the widest sense, should be received : — Prepared skins of birds 

 and animals (prepared by new processes), skeletons, anatomical figures, 

 microscopical objects and preparations, mineral and geological series 

 and specimens illustrative of the geology of various districts, fossils, 

 maps (physical), Ward's cases and aquaria, botanical specimens, and 

 educational works on natural history. 



Nobert's Nineteenth Band. — We greatly regret that we are com- 

 pelled, for the third time, owing to press of matter, to omit Mr. 

 Charles Stodder's interesting paper on Nobert's Nineteenth Band. 

 We hope, in our next, to bring it at last, and after so long a delay, 

 before our readers. 



