310 On ihe Veterinary College.[ Nov.

preventing the said style from being carried round by any possible accident with the axis as it revolves; which before it was used had Sometimes taken place, and greatly embarrassed the account: and as the 320 diviSions marked poles on the index of the axis are calculated to describe an exact mile, the Style F, having passed over them, will then Screw no farther, but moving round with the axis takes with it the standard, and striking it on the wrist of the operator, prevents the possibility of his proceeding farther till he has drawn his hand. from be- tween the Said Standard and the axis: havingin road measuring received the necessary hint, he turns the screw G, puts back the style F, to the bottom of the index, and goes on as before.

The standard of the cross divided into five lengths occa- SIOnally, Substitutes, the ten link rod used for measuring offsets, &c. and 1s also used for 5mall distances inaccessible to the wheel.

No doubt the perambulator with its perpetual Screw, dial,, and other contrivances, 80 long Since invented, would answer all the design of this predometer, but the great expence of ihat elegant and curious instrument, precludes it from appli- cation to the common purposes of husbandry. What is here recommended may be easily constructed by a mechanic, and at a very Small charge.

In every work on Agriculture, we see calculations on the produce of fields, without the dimensions of those fields being correctly ascertained. It is a well known principle with farm- ers to conceal the'real extent of their ground, lest the rent assigned to the nominal dimensions Should be by their landlord applied to the real demensions. We hope the liberality of Jandlords, and the confidence of tenants, will conduce to re- move this obstruction to improvement; for all the calculations that are made for the aszistance of the individual, or for the Information of the public, on comparative produce, must be fallacious until the field be correctly measured on which the experiments are made.

--<<< EERERÜID H wannetemnmnnn nnn VETERINARY COLLEGE. To the Editorgof the Agricultural Magazine. DIR T 1s Somewhat Singular, that the improvementin the Veteri- nary Art, instead of originating with our great military NOAG 2607 bas been chietly promoted by an obscure as- SACIation at Odiham, in Hampshire, which entertained the de- SIgn of Sending two young men ot talents into France, to becömhe pupils in this new profesSion. Having received my education in this School, 1 have Sometimes proposed to myzelt the pleasure of communicating through the wedium of your