406 Scientific Intelligence . 
M. Hauy, who, in his youth, had successfully cultivated the 
study of Botany, had composed a herbarium of about eighteen 
hundred plants of the neighbourhood of Paris, the colours of 
which he preserved by means of a process of his own invention, 
so that they are still as fresh, after an interval of more than for- 
ty years, as if newly applied to the paper. This herbarium, 
which is unique of its kind, is also for sale. 
Those intending to become purchasers, are requested to ad- 
dress to Monsieur and Madame Vuillemot Hauy, at the Jardin 
du Boy. 
89. Professor Lenz’s Works on Mineralogy — M. J. G. Lenz, 
Professor of Philosophy at Jena, founder, in 1797, of the Mine- 
ralogical Society of that city, and known by several works re- 
lative to mineralogy, received, on the 25th October 1822, the 
congratulations of his colleagues, on the occasion of his en- 
tering the fiftieth year of his professorship, at a solemn fes- 
tival kept for the purpose. In order to form a right com- 
prehension of the following circumstance, it must be known 
that mineralogists are divided in opinion regarding certain 
rocks, which the one party attribute to fire, and the other to 
water. M. Lenz has always shewn a marked attachment to 
the opinions of the celebrated Werner, and is consequently a 
zealous Neptunian. Before the place which was to be occupied 
with the academic banquet was placed the representation of a 
volcano, figured in relief ; and when at table, the volcano at a 
signal given, vomited up a great number of ducats, and a beau- 
tiful gold medal. It was a present from his Serene Highness 
the Great Duke of Saxe Weimar, to the respectable Professor, 
who, for once, could not refrain from crying out with the assist- 
ants, Long live the Vulcanists ! We have seen some verses of 
the celebrated Goethe on the subject, where he exhorts M. 
Lenz to abjure what he calls the Neptunian heresy. ( All. lit- 
ter. Zeit. von Hall. Dec. 1822.) 
40. Non-occurrence of Chalk in the Island of Creta . — The 
word Chalk is generally derived from Kreta, and probably the 
ancients may have used, in place of chalk, the marl found in 
Creta, the modern Candia ; but true chalk occurs no where in 
that island ; on the contrary, it is imported for economical pur- 
