21 
Mr. Briggs seconded the motion, and it was unanimously 
adopted. 
Mr. Hartop begged to propose that their indefatigable 
secretary, Mr. "Wilson, and Mr. Embleton and Mr. Morton, 
be deputed to attend the next meeting of the Manchester 
Geological Society. 
Mr. T. P. Teale seconded the motion, and it was agreed to. 
Mr. Wilson proposed the admission of an additional list 
of New Members which he read. 
Mr. Embleton seconded the nominations, and the gentle- 
men were admitted. 
Mr. Morton moved that the next meeting of this Society 
be held at Bradford in March next. The migratory system 
had answered so well that it was desirable to keep moving, 
and as Bradford was the next best place that had not yet 
been visited, he begged leave to offer the motion which he 
had submitted. 
Mr. Wilson seconded the motion, and it was agreed to. 
MR. CHARLES MORTON ON THE SAFETY LAMP. 
Mr. Charles Morton placed on the table a variety of 
safety lamps, and proceeded to make some observations and 
experiments upon them. He called to the recollection of 
the members the attendance of Mr. Fletcher, of Bromsgrove, 
at one of the former meetings, when that gentleman pro- 
duced and described a safety lamp constructed on an 
improved principle. Mr. Fletcher had since modified his 
lamp in accordance with the suggestions thrown out at 
that meeting, and tlie lamp which Mr. Morton exhibited 
had been sent to him by the inventor for trial in the coal- 
mines. The novelty of the apparatus consists in a door or 
damper at the top, which is held up by a string tied fast to 
the lower part of the lamp. If this string be cut or burnt, 
the damper drops down and extinguishes the light, in the 
same way as the shutting of the damper on the top of a 
furnace-chimney puts out the fire beneath. When therefore 
the lamp is introduced into an inflammable atmosphere, the 
combustion of the fire-damp inside burns the thread, and 
the damper dropping down destroys the flame. Mr. Morton 
thought the damper would give rise to so much trouble 
that the colliers would not use it. The string is not very 
readily adjusted, and it passes so near to the wick that a 
slight inclination of the lamp or waving of the flame burns 
the string, and the falling of the damper leaves the collier 
