vi PREFACE. 
the cultivators of science, will still do every thing in his power to 
promote its high interests, and as he hopes in a better manner 
than heretofore ; but these respectable gentlemen will have the 
courtesy, to yield something to the reading literary, as well as 
scientific public, and will not, we trust, be disgusted, if now and 
then an Oasis relieves the eye, and a living stream refreshes the 
traveller. Not being inclined to renew the abortive experiment, to 
please every body, which has been so long renowned in fable ; 
the editor will endeavor to pursue, the even tenor of his way ; 
altogether inclined to be courteous and useful to his fellow trav- 
ellers, and hoping for their kindness and services in return. 
¥ale College, July 1, 1829. 
The Chemical Text Book for the students of Yale College, 
and for other students of Chemistry, is now in the press, and 
may be expected in the month of September. 
