266 Analysis of Mr Barlow’s Essay on Magnetic Attractions. 
made by Mr Barlow on the subject. I find, however, that 
some experiments somewhat similar have been tried in Den- 
mark many years ago. The results I have not yet obtained, 
being ignorant of the Danish language, in which they are 
recorded, but I hope to obtain a translation in a few days. — 
44 Most faithfully your’s, (Signed) Jos. Banks.” 
After waiting some months, and receiving no other informa- 
tion from the Royal Society, Mr Barlow seems to have commu- 
nicated the contents of the above letter to Professor Schumacher 
of Copenhagen, requesting to be informed whether any such ex- 
periments were recorded in any Danish work he was acquainted 
with, and the following letters from Commodore Wleugel 
and Professor Schumacher, seem very decisive in favour of Mr 
Barlow’s claims. 
From Professor Schumacher to Mr Barlow. — 44 Dear 
Sir, I have just received the Edinburgh Philosophical Journal, 
and found an account of your experiments. However, I was 
aware that such experiments never had been made here ; I re- 
quested my worthy friend the Commandeur Wleugel, who has 
applied himself with great success, particularly to these studies, 
to give his opinion of it, if they were new or already made here. 
You will find that your experiments never were made in Den- 
mark.” 44 Your very obedient servant, 
(Signed) 44 Schumacher.” 
From Commodore Wleugel to Professor Schumacher . ( Trans- 
lation.)— 44 Though there have been made experiments in Den- 
mark, not only on the effects of considerable masses of iron on 
the needle, but also on the mutual influence of magnets, yet, 
experiments similar to those published in the Edinburgh Philo- 
sophical Journal, No. 2, October 1819, page 344, et seq. and 
several of the results deduced from them, never have been pu- 
blicly known before in this country, which I herewith testify.” 
(Signed) 44 P. W. Wleugel, 
44 Commander in the Royal Danish Navy, Examiner 
at the Royal Naval Academy, Director of Navi- 
gation, Knight of the Order of Dannebrogen,” 
44 Copenhagen , June 16. 1820.” 
After this digression, which we thought it but just to make 
in favour of Mr Barlow’s claims, we proceed in our farther ana- 
