Date: 1863
638 LITERARY SERIES.  [Ninth but very little apparatus, and therefore the experiments may be per formed in almost any situation ; it saves a great deal of time and a great deal of expense; while the numerous discoveries of Dr Wollaston demonstrate the precision of which his method is susceptible."  It may be added, that the laboratory of Dr Wollaston, small as it was, proved more profitable to his purse than has usually been the case with experi mental philosophers.