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after being started must suffer no interruption  There should be furnished duplicate parts which can readily 
be substituted for any that may give out
After all he thinks Roper's Engine better than Erickson's - Both in his opinion are going ^[[insertion]] out [[/insertion]] of use in Boston and in Portland - Not on 
account of the fuel used but the expense of repairs and renewall of parts.  They do not do as much work ordinarily as they are rated to do.
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[[page number in pencil]] 9
The arrangement for opening the valves of the trumpet is defective [[strikethrough]] It must move a [[/strikethrough]] The ratchet wheel must move with so much friction on its axis to enable it to hold its own that 
it impedes the engine and is liable to be broken as it was in this case 
Mr Foster thinks an ordinary steam engine with boilers with large steam space and little water surface would be surely managed not liable to get out of order No difficulty in regard to 

Transcription Notes:
There appears to be older writing beneath this.