Mr Steffen's Description of a Sitometer . S Ti- 
the farmer or corn-merchant can, at one glance, see the quantity 
of grain measured up in his absence ; and if he is desirous to 
know whether his servants are working industriously, let a well- 
sounding bell (Fig. 1 .) be attached at q, and its hammer r be 
fixed upon the axle of the dog-head b , then, for every half boll 
marked by the pointer /«, the hammer will give an audible stroke 
upon the bell ; the ringing of which may be heard by the mer- 
chant, in his counting-room, if situate near the premisses. The 
ringing of the bell will prevent any chance of a mistake being 
committed through neglect, as its sound will be distinctly heard 
above the noise of the fanners, even on a wooden door. 
Such a machine may be constructed at little expence, and it 
may be fitted up in a box, to be taken where used, or fixed 
against the wall, at a convenient place. The one I use, though 
made of brass, and a first attempt, cost only a few shillings. 
The scale of the above sketch is T 5 0 ths to an inch. I am con- 
vinced, if farmers and corn dealers would use it, they would find 
it a very convenient little machine. If so humble an instrument 
deserves a fine name, I would call it the Sitometer. 
Aut. I X — Description of a Hydro metro graph , or a Ma- 
chine for Measuring and Recording the Quantity of Water , 
or any other fluid, discharged zviihin a given time from 
Conduit Pipes . Invented by the Chevalier Joseph de 
Baades, of Munich, in the Kingdom of Bavaria. Commu- 
nicated by the Inventor *. (With a Plate). 
f HE first idea of the Hydrometrograph was conceived by the 
Chevalier, and communicated by him to various persons in Ba- 
varia, many years since. It arose from the generally acknow- 
ledged want of an exact measure, for the quantities of salt water 
delivered and employed in different parts of the extensive Royal 
Salt-works at Reichenhall and Traunstein, with the manage- 
ment of which he was entrusted, and where the quantities of 
brme could only be computed by the ordinary means, in such 
* The above is from a valuable periodical work, “ Gill’s Technical Reposi- 
tory.” 
