Joseph Banks - Endeavour Journal, 25 August 1768 - 12 July 1771 - No. 0094
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[Page 94]
Electricity
The cheif reason why this machine workd better than mine seems to me to be that the bottle was coated with varnish between the stopper & coating of Lead this probably did not condense the damp of the air near so readily as glass & consequently the machine workd well when mine refusd to work at all
Monday, March ye 29th 1770 of the Coast of Lat. Long.
The machine on being taken out of the Box was found to have had by some accident the plate & one of the Phials broken the former was replacd by a spare one every part of it was perfectly dry & workd with great freedom a small proportion of Electricity only could be excited the most enough to strike through one card during all our experiments the floor cloth conductd as it had done before tho it had not been washd