1815.] Scientific Intelligence. 309 
science and practice of medicine, and his or their fitness and quali- 
fication to practise as an apothecary. 
That from and after the lst day of August, 1815, it shall not be 
lawful for any person or persons (except the persons then acting as 
assistants to any apothecaries, and excepting persons who have 
actually served an apprenticeship of five years to an apothecary) to 
act as an assistant to any apothecary, in compounding or dispensing 
medicines, without undergoing an examination by the Court of 
Examiners, or by five apothecaries, so to be appointed as herein- 
after is mentioned. 
That-it shall and may be lawful to appoint five apothecaries in any 
county or counties respectively throughout England and Wales (ex- 
cept within the said city of London, the liberties or suburbs thereof, 
or within 30 miles of the same,) to act for such county or counties, 
or any other county or counties near or adjoining ; and such five 
apothecariesare authorized and empowered to examiné all assistants 
to apothecaries throughout the county or counties in regard of which 
such apothecaries shall have been so appointed as aforesaid. 
That if any person (except such as are then actually practising as 
such) shall, after the said Ist day of August, 1815, act or practise as? 
an apothecary in any part of England or Wales, without having: 
obtained. such certificate as aforesaid, every person so offending shall 
for every such offence forfeit and pay the sum of 20/. ; and if any 
person (except such as are then acting as such, and excepting persons. 
who have actually served an apprenticeship as aforesaid) shall, after 
the Ist day of August, 1815, act as an assistant to any apothecary, to. 
compound and. dispense medicines, without having obtained such: 
certificate, every person so offending shall for every such offence. 
forfeit and pay the sum of 5/. 
That no apothecary shall be allowed to recover any charges 
claimed by him in any Court of Law, unless such apothecary shall 
prove on the trial that he was in practice as an apothecary prior to, 
or on the said Ist day of August, 1815, or that he has obtained a 
certificate to practise as an apothecary. 
That the said Master, Wardens, and Society of Apothecaries, do 
make annually, and cause to be printed, an exact list of all and 
every-person who shall in that year have obtained a certificate to 
practise as an apothecary, with their respective residences attached 
to their respective names. 
VI. Further Observations on Mr. Lockhart’s Extraction of the 
as Cube Roots of Binomial, 
(fo Dr, Thomson.) 
SIR, 
On examining my letter of June 16, I observe that I have 
omitted to state that the correction which is there pointed out is 
only applicable to equations which are reducible by Cardan’s rule, 
Mr. Lockhart’s roots. being correct if the equation belong to the 
irreducible case, In my letter, instead of saying * Mr, Lockhart 
