1819.] Scientific Intelligence. 73 
16 years of age. I conceive, therefore, that he must have 
reached at least the age of 60. His health was for many years 
excellent ; but tt was injured during the last war of Bonaparte in 
Germany, particularly by the siege of Erfort. His sight became 
very feeble during the latter years of his life: he became almost 
blind, which threw him into a profound melancholy. His charac- 
ter is represented as very amiable. He has left behind him a 
widow and one son, who is said to possess the abilities of the 
father. : 
Bucholz was one of the most active and accurate chemists 
which Germany possessed. His publications are exceedingly 
numerous, and all of them stamped by the most patient industry. 
He was an apothecary, and devoted much of his time to the 
improvement of his art. He was in the habit of publishing an 
annual volume on the subject. He published three volumes of 
chemical experiments, under the title of “ Beitrage.” Anda 
vast number of chemical papers by him are to be found in Crell’s 
Annals, Scherer’s Journal, Gehlen’s Journal, Trommsdorf’s 
Journal, and Schweigger’s Journal. 
XI. New Yellow Dye. 
A chemist in Copenhagen is said to have discovered a new 
brilliant yellow dye, which possesses a great deal of permanence. 
He cuts off the top of the common potatoe plant while in blos- 
som, and bruises it in order to extract the juice. Cotton, or 
woollen cloth, steeped in this juice for 48 hours, acquires a fine, 
solid, durable, yellow colour, If the cloth be now put into the 
blue vat, a very fine green colour is obtained, which is not 
liable to fade. See the Journal of Toulouse, called “ Ami du 
Roi,” No. 82. 
XII. New Observations on the Planet Uranus. 
_ When Herschel ascertained in 1781 the motion of Uranus, 
astronomers endeavoured to ascertain whether this planet had 
been already observed as a fixed star. M. Bode discovered two 
observations of the planet, the one in the catalogue of Flamsteed, 
and the other in that of Tobias Mayer. Lemonnier, on his part, 
ascertained that he had himself observed it three times. More 
lately, Messrs. Bessel and Burckhardt have found several posi- 
tions of the new planet in the catalogues of Flamsteed and 
Bradley. In order to make the tables, which he is just going 
to publish as perfect as possible, M. Bouvard has had the 
parnce to go over line by line the manuscript registers of 
emonnier, and has discovered that this astronomer had observed 
Uranus 12 times between Oct. 14, 1750, and Dec. 18, 1771. 
The disorder of these registers, which rendered the labour of 
M. Bouvard very disagreeable, can alone explain-how Lemon- 
