book. « Wallerius publiihed at Stockholm, in 174 7 , the firft
. . ' ■« fketcli o f his fyftem in the Swediih tongue ; and he has
“ preferved nearly tfte fame arrangement in the fubfequent
“ editions o f 1 7 5 4 and 17 78 . In the following year he
“ gave to the world a diifertation ‘ On the Nature and Ori-
“ gin of Nitre and in 17 5 1 , after he had been nominated
“ profeifor o f chymiftry, metallurgy, and pharmacy, an aca-
44 demical diifertation ‘ On the principles o f Vegetation.’
44 Soon after his appointment to the profefforfhip, he printed
“ in his native language, * An Epiftle on the true Nature,
*t Utility, and Excellence o f Chymiftry.’ In the next
44 year, additional to his trad! on Vegetation, he publiihed
« another, relative to ‘ The Methods and Ufe o f rendering
“ Seeds fertile, by waihing or infufing them for a certain
“ Time in various Kinds o f Liquors and in the refult he
“ gives it as his opinion, that fuch methods are generally
44 hazardous.
44 In the lame year Wallerius put forth, in the 7th vo-
“ lume o f the Acia Academia. Natural Curioforum, a paper
“ ‘ On the beft Method o f making Tar from the Pine and
44 Fir T r e e s i n which he takes oceafion to treat o f the
44 principles o f tar-water, the medicinal fame whereof had,
“ by means of the Biihop of Cloyne’s Siris, fpread over all
44 Europe.
44 In the fame adts he has written 4 On the ftellated pr ar-
44 borefcent appearance on the Regulus Antimonii;’ and gives
44 diredtions to prepare the regulus fo as to fucceed in ren-
44 dering the ftar vifible; obferving, that it depends on the
41 antimony being more or lefs deprived of its fulphur. This
44 year produced from the prpfeflor a thefis, containing
44 4 Some Stridlures on the erroneous Method o f preparing
44 certain Chymical R em e d ie s a lignal proof o f Lis appli-
j 44 cation
44 cation o f true chymical knowledge to the real advantage CHAP-
44 o f pradlical medicine. . .
44 In the adls o f the Royal Society o f Stockholm for 17 5 4 ,
44 the profeffor has defcribed the method o f making, from
44 mercury alone, the arbor diana, or what has been called
44 the philofophical tree.
44 In the fame adls, Vol. XXI. for 1760, with equal abi-
41 lity, he inquires into 4 the nature o f that earth which ex-
44 ifts in all vegetables and animals as a principle o f their
*l compofition;’ and he here takes oceafion to lpeak o f the
44 method o f obtaining pure earth o f this kind, from water
44 by trituration, as mentioned by Elle r: a fadt which ha?
44 been much doubted, and difputed, by many fubfequent
44 philofophers and chymifts. In thefe adts alfo, for the year
44 176 5 , we find the refult o f his examination o f platina, by
414 which it appears that he thought it a real metal, and non
44 as fome have judged, either a recrement, or a mixed metal.
44 In 1 7 6 1 , he publiihed an academical difiertation, under
*4 the title o f 4 Chymical Principles o f Agriculture/in quarto,
44 nearly o f 300 pages; in which the various methods o f
41 fertilizing different foils, by manures, and other procefies,
44 are difcuffed. About the fame time he wrote, in the Swe-
44 difh tongue, a thefis, on occafion o f fome mifchief done
44 at Upfalaby lightening, intended to prove the perfedtfimi-
*4 larity between the matter o f lightening and the eledtrical
44 fire*
44 In 1768 Wallerius gave to the world a large volume in
44 odtavo, in Latin, 4 On the Elements o f Metallurgy,’ in
44 wbibh he has copiouily delivered the principles o f the
44 docimaftick art. The fame year he alfo put forth what
44 he calls 4 Lucubrations on all the SyftemsofMi'neralogical
44 Writers,’ and on the 4 method o f conftrudting a rational
M m m a « claffi.-