I*J**3_ 



THE AGRICULTURAL GAZETTE. 



j ine gauic cuuo , 

 5? « ?*" b^rwi^answef tie* samfe 



tJT^pe of the heated air. 

 *» ■ -£iv unnecessary to say one wo 

 , it provides, be 

 think it necessary 



>oth ends, put into a steam-tight circular sheet-ii 

 tenser, and instead of the steam puffing away i 



ts~~£*zi 



! ■;■ i. 



lating is the neglect 



ve a space for the 



provided for, at the 



STwSyVsteni, the shutting of a bole or door 



1!£h ithe heated air, and all is at the mercy of i 



-en*. The present temperature of a byre, I can say i 



JJ^perienee, is by my method kept up, so as to : 



jy the sea-water running through them. The condensed 

 water was pumped back into the boiler by a pump with 



die water was kept perfectly sweet. There were two 

 toilers, each having 104 tubes of 5 feet long, and 2 



iiour, and the 'engineer called them two 30 horse 

 mgines. When in London I particularly examined the 

 engine that is driving all the machinery at the Poly- 

 technic ; it is one that uses high steam in the first 

 jylinder, it is then expanded into the second cylinder, 

 ifter which the steam is condensed in the usual manner, 

 the maker guarantees them to work with 3 lbs. of coal 

 per horse power per hour. This is certainly very 

 economical, but 1 am sad v atrai ! i: is too c implicated 



in a running stream, or where water could be pumped 

 to supply tiie pipes of the condenser, it would be more 



and passages, and as much lap as could be gotten 

 for the valve. Richard Nicklin. [The middle port 



a branch of agricultural 





: 



KdgVof'Ihe stoL-engine™ duces me" to mat- 

 teqwkted with improvements I got 



■--■■■iZ-', < : . '-"' ■■ 



-%i h»4 ,«jj *»s™ T s r T e J "Ti f i el a 



per ton than would pay ; the fault I found belong! 

 tiie slide valve which had barely a quarter of an 



to h*hTbe safe, antthTback pressure^as^ ( 

 tfct«hen the steam was high, it requ " 

 fij-irheel to pull it over the centres. 

 rWo« what had best be done, I me 

 mi Wore the Polytechnic Society 



, /?,-,'— Mr. Arthur Young, in his 

 ir," published i;i m<U, says (p. 232), 

 >pose any person will now go to the 



"greater convenience^ 8 ' He recom- 



:!i«v.ild bep'accd 



VVl.il - 

 f Liverpool by 



and are much cheaper now than in 1804, how is it we 



,- . : -.. . — 



or do you know of any instance of the practical applica- 

 tion of Mr. Young's very ingenious, and, apparently, 

 very useful and convenient suggestion I T. F. 



Practice illiScu > c.—Oi .ill the iuventionsof science, 

 there is perhaps none greater ^ ^.^ ^Jj™ 

 Our mechanical contrivances were for a long time con- 

 fined to our manufacturing operations. The Royal 



J"**, the consumption was 

 ■J* «th the first Take, to 1 



fc^-?? , a *? y with ali back P re88ure " • 



J"*** I altered my valve, it then worked i 



& !1S a L great deal less P ressure of 8team ' 



"»ng only one ton of slack per day, which c 



_ tie doing :. 

 am one, and it appeared to do its 



imp!,.: 



■ ■ : 



red quantity, be it desired more i 

 flat or on the ridge, with manure or wil 

 " • the same machine. These fert 



Mr. Beale's engine had M 



- 



ran we can possibly do. It therefore bec< 

 3 advantage of all the means within our 

 ,rove the sources from which profile spn 



Zvifoem parte rfSte kingdom, and in Scotland, agri 

 



question that the produce f 



tday. Let them h -_ 



afforded him one of the 



s:e;. 



>•' •■ '■' ■':• 



tkMgh, that does the 1 



; 





•. = ■■-■■ ■ 



he would probably have had 60 

 We are still qu* 



-I have sown two 

 seed Mr. Keene sent me ; the first was sow 



*k- Pri™ \ ansea > wh erein T found 



