398 Domestic Intelligence. 
my acquaintance with Mr. oe cdncens the pupil of Wer- 
ner,—with Dr. Babington, and Dr. now Sir Alexander 
Creighton, afforded me access to most of th the collections then 
forming in this metropolis; I availed myself of those oppor- 
tunities of beginning the small collection now deposited in 
your college. I also added to it many valuable articles pur- 
chased at the celebrated cabinet of the late Earl of Bute. 
The beautiful specimens of dendritical marbles were derive 
from the latter source. Shortly after my return to New- 
York, with the assistance of the late Dr. Bruce, who was 
then my + private pupil in medicine, I arranged and marked 
the several specimens in that collection. This exercise 
first awakened Dr. Bruce to this subject, and laid the foun~ 
dation for his knowledge in a interesting branch of natu- 
istory, in which he afterwards became so distinguished. 
From time to time I hope stil to make such additions to 
the above cabinet, as to render it more deserving of notice. 
As the first collection that crossed the Atlantic, and as the 
parent of many others of much greater value and extent, it 
perhaps meritsregard as such. I shall endeavour to improve 
it and increase its usefulness as a source of instruction to the: 
pupils of Nassau Hall. With my best wishes for the pros- 
perity of the institution, I am, dear Sir, 
Respectfully yours, 
DAVID HOSACK. 
Jacos Green, Professor of Natural History in Princeton. 
3. New Graduating Instrument.—The Editor has been 
take favoured with a drawing and ee a = an instru- 
pe invented by Mr. Thomas Kendall, Jr. w Leba- 
N, Y. and called by him the Universal Graduat ator. It 
fostialion a mode, inferior we presuine to none hitherto 
Known, in point of expedition and accuracy, of dividing @ 
line of given length into any desired number of equal parts. 
The principal use to which the inventor proposes to apply 
it, is to the ata of thermometer scales. We do not 
-* This gentleman gave j in the winter of 1783—4, the first course of lec- 
on Mineralogy evs ote delivered in the city of London. I had the the pleasure 
he ee Bioprapay of of L Dr. As contained in Fos seemgrd re ge this 
