Celsius' and Fahrenheit's thermometers, and finally calculations 

 of the specific gravity of alcohol, according to the degi'ees of its 

 dilution. 



The translation is efi'ected not without a certain freedom, 

 extended even to the etymologic construction of the chemical 

 appellations; yet I have endeavoured to adhere to the original 

 text, so far as the difierent idioms of the two languages permitted. 

 If I have failed in fusing the ti'anslation into the best expressions 

 and forms, then I may frankly concede, that unless under remark- 

 able circumstances of exception we never will be able to wield 

 fully a language, which has not been that of our youth. If, after 

 much toil and expenditure (the print of this translation beittg 

 effected at my own private expense), I could wish, to reap any 

 reward for my aid in drffusing the knowledge of methods, adopted 

 by a leading masterly operator in phyto-chemistry, it woidd be, 

 that local observers in these southern colonies, as well as in 

 any other cou.ntries, teeming with an almost endless number of 

 yet novel objects for phyto-chemic inquir}/ for additional resources, 

 may be armed with auxiliary means for extending not only 

 in abstract the science of chemistry, but also the precincts of 

 therapeutics, and the realms of technology in reference to 

 vegetable products. 



Melbourne, May, 1878. 



