300 Bibliography. 
tention to this important hygienic subject in the daily journals. The 
late enquiries set on foot by the City Council of Boston, have called out 
a large amount of experiments and speculation upon this subject ; and 
the aid of both chemical and medical science has been invoked, to en- 
able the New England metropolis to make a wise decision, as to the 
material in which ‘they — distribute the beautiful water of Lake Co- 
chituate, now to be introduced in a few months by their new 7 cates 
aqueduct. The sbenclaws on this subject are understood to be still 
in progress, and their full results are not yet made public. hast 
however has transpired to convince the yer that in all probability the 
Boston authorities will authorize the use of lead-pipes. Opposed to 
this decision, are the opinions and facts of Dr. Dana and others, who 
cannot be convinced that the experience of years of observation has 
deceived them in the results to which he and they have arrived, hostile 
to the use of lead as the means.of —T water for human con- 
as cognate diseases sie ed by the poisonous influences of other met- 
als. Dr. Dana has certainly performed a most acceptable service in 
presenting ~ the public this able work. We cannot now pause to an- 
lew it as we could wish ; ‘this task must be referred to an- 
An appendix contains numerous results obtained by 
acai others i in this country, and — of the mocnigies effects 
of jebhicodidena water in numerous instan 
7. Genera 
is encu 
bered with many difficulties arising from the wide extent of the 
subject, the great number of objects embraced, and the unavoidable 
minuteness and technicality of descri ription. Illustrated works are often 
therefore an indispensable resource. ginner may find the de- 
sired aid in part supplied by the well-stored mind of his teacher, t 
whom all doubtful points cam be referred. Yet finished illustrations 
better than an instructor. Those who have become versed in science 
are so fully satisfied of the necessity of such aids that they sitialle have 
" The full title is given on page 450, vol. vy, ii ser. of this Journal. 
