Intelligence and Miscellanies. 371 
own, Conn. 
Messrs, Hedge &- Co. of that place, have just commenced 
the manufacture of Wollaston’s Scales. The one before us, 
says a writer in the American Sentinel, is the most finished 
specimen of workmanship of the kind we have ever yet seen; 
and the first attempt in box wood, to our knowledge, in this 
country. The scale is 21 inches in length, by 3 and 2-10ths 
in breadth, 
The graduation is done by machinery, and is executed with 
a degree of beauty and accuracy we have never seen equal- | 
led by any thing of the kind. 
Those who are acquainted with the use of rules, know 
how difficult it is to obtain such as are accurate. Mr. Hedge, 
by means of his machinery, is enabled to make the best rules 
in this country, and they are, in consequence, highly esteem- 
ed by all competent judges, 
Great care has been taken in the plan of arrangement of 
the chemical substances. The elementary bodies, metals, 
and metallic oxides, are arranged on one side of the slide, 
by themselves—the names of the metals are printed in larger 
type, which adds not only to the beauty of the scale, but 
renders it much easier to find their respective places. 
With regard to the representative numbers of the chemi- 
cal substances, the greatest care has been taken in consult- 
ing the latest tables of Drs. Henry, Thomson, and others so 
as to correct the errors of former tables. : 
The scale, thus improved, was made at the suggestion and 
under the superintendence of Doct. J. Barratt. 
Uniformity in the scales can be depended upon because 
the graduation of the line of numbers on the slide, is done 
by machinery. € names are printed upon the scale with 
moveable steel types, and therefore advantage can be taken 
of any improvements ; or any list of names can be printed, 
to suit the particular wishes of chemists. 
e may remark farther, that Messrs. Hedge & Co. have 
been engaged some time past in the manufacture of gun- 
ter’s scales and carpenter’s rules, of every description. The 
apparatus for effecting the graduations, is of a novel and 
