CERTAIN USBFITL ANALYSES?. 197 



mediately be precipitated in the form of white floccu- 

 lent masses, the abundance of which may indicate 

 the proportion present in the guano. 



5. It is safe still farther to test the organic matter, 

 by mixing with quicklime, as described, page 106. A 

 very strong odor of anmionia should become percep- 

 tible iiuiuediately, and continue to be given oa for a 

 considerable length of time. 



The foregoing instances are of a nature so simple ^ 

 as to be ea.sily understood, and are sufficient to show 

 that the farmer, without becoming a chemist, may 

 still make some valuable experiments for his own sih 

 tisfaction; and this with such means as are to be found 

 in any countrj- village. 



I might multiply cases of the same nature to an 

 iridt finite extent, but as this is not an extended treatise 

 !i analytical chemistry, the above illustrations are 

 ^ I'M ient for the present purpose. 



One great end will be attained by all who go 

 tlirough with such examinations as these, or who ex- 

 periment ujKjn the various substances mentioned in the 

 \ ioua chapters. They will soon familiarize them- 

 rs to sucn an extent with chemical phenomena, 

 and terms, that they will be able, far more readily 

 niid pcrfettly than ever before, to comprehend the 

 \v * ings and discoverits of scientific men, and to draw 

 II >iu them truths profitably applicable to their own 

 pursuits. 



17» 



