11 



oil-container ; an<l as the wick acts the part of strainer, it should 

 be changeil not less fre(|nently than every two months. 5. IJeforc- 

 lip;hting the lamp, the charred pieces of wick must be removed by 

 rubbing with the fingers. Do not, if you can avoid it, cut with 

 scissors. 6 Turn n\) the M-ick slightly, light it, let tlie flaiiu!- 

 remain thus for two or three minutes, then turn up to tlie full 

 power. Tlu' flame should be white ; if it be orange-eokiuved tlie 

 wick is too high, and must l)e turned df)wn. 7. If a Lmip has 

 been used for three or four hours, it mu.st lie filled again before 

 re-lighting. It is well to keep the lamp filled. Du nut burn the 

 lamp when the oil is nearly exhausted. 8. Take care tci well 

 wipe tiie lamp after filUng. The unpleasant smell generally imtieeil 

 when a lamp is first lighted chiefly comes either frum the fragment.s- 

 of burnt wick inside the burner, or from oil spilt cm the outside in 

 filling. 9. To extinguish the light, turn down the wick gently, 

 and leave the small flickering blue flame : this will soon die out. 

 ])o not blow down or across the chimney. 10. If the nil taki's fire 

 at the Inu'ner, a sharp puff of breath will fre<pu'iilly put out the 

 flame. If it does not, smother it out witii a mat fir other \\iiolJen 

 material. 



In conclusion, the Lecturer showed some experiments with 

 respect t<i tlie inflammability of the various products of petroleum, 

 and demonstrated that the refined petroletun of commerce does not 

 explode. ^h: Phillips stated that he was engaged in perfecting 

 a safety lamp, which would be self-extinguishing if it fell on 

 the floor. 



TUESDAY, X{)VE]\IIJER 2nd. 



A second Lecture on "Richard Wagner" was given by Carl. 

 Armbru.ster, Esq. 



The Lecture was illustrated by a selection of extracts from 

 " Loliengrin " and " The Master Singers of Nuremberg," which 

 were performed by Miss Paidine Cramer and by the Lecturer. 



The pianoforte was kindly lent for the occasion hy ^Messrs. 

 P>roadwood. 



