‘Jidate his affertions. 
512 
then circulated. He had already long prac- 
tiled inoculation with fuccels; but with- 
out carrying his opinions to the extent that 
the improved method was faid to juftify : 
he foon found that it allowed of expofing 
patients,more particularly during the erup- 
tive fever, to a greater degree of open air 
and cold than had been before confidered 
either fafe or prudent; and he was impa- 
tient to communicate to the world at large 
the certain fuccefs with which he became 
daily more convinced this practice was at- 
tended: yet before he committed his fen- 
timents to writing, he was. determined to 
be clear and correét in an inquiry fo new 
that no objections, from authorities the 
moft refpe&table, fhould be able to inva- 
He therefore con- 
tinued to purfue his objeét with clofe atten- 
tion and accurate obfervations; and in 
1776 he publithed his treatife, on “ The 
prefent Method of inoculating for the 
Small-pox.”* 
No book was ever received with more 
expectation or fatisfaétion by the public. 
It was foon circulated on the Continent, 
and tranflated into the German, French, 
Italian, and laftly, into the Ruflian Jan- 
guage; and it is but juftice to add, that 
the obfervation of the Author at the end 
of the chapter, intitled the Conelufon, 
when he fays, ‘* That altheugh the whole 
procefsmay have fome fliare in the fuccefs, 
it in my opinion confifts chiefly in the 
method of inoculating with recent fluid 
“matter, and the management of the pa- 
tients at the time of eruption,” is a laft- 
ing proof of his forefight and difcerament. 
From the reputation he had acquired by 
this treatife, from his refpectability of 
charaéter and profeffional merit, it is 
probable,that an important event foon took 
place which is particularly detailed in a 
work, publifsed by him in 178s, in- 
titled, ** Traé?s on Inoculation,’ in which 
an account is given of an invitation to at- 
tend on the Court of Ruffia, to inoculate 
her Imperial Majefty, Catherine, and her 
fon, the Grand Duke; and his confequent 
journey to St. Peterfburgh, 1768, accom- 
panied by his fecond fon, Nathaniel, for 
. that purpofe. 
It may fuffice here to add, that both 
thefe diftinguifhed perfonages pafied thro” 
the fmall-pox, with the greateft fuccefs, 
and he had the fatisfaétion of receiving 
affurances from them at different times of 
their enjoying better health fince that 
event. 
Immediately after their recovery, a no- 
bleman of the firft diftinétion acquainted 
him with the honourable and generous 
Account of Baron Dimfiale. 
[July 3, 
manner in which her- Imperial Majefty 
propofed to reward his fervices; particu- 
larly, that he fhould be appointed an ac- 
tual Counfellor of State, and Phyfician to 
her Imperial Majefty, with an annuity of 
sool. fterling ; that he fhould be prontoted © 
to the Ronour and dignity of a Baron of 
the Ruffian Empire; and that the eldcft 
of his lawful defcendants fhould bear and 
inherit the fame title for ever, in perpetual 
fucceffion; that he fhould receive imme- 
diately 10,000l. fterling, and 2000l. for 
the expences of his journey to and from 
St. Peterfburg, and that he fhould be pre- 
fented with miniature pi€tures of the Em- 
prefs and of the Grand Duke. Her Iim- 
perial Majefty was alfo gracioufly pleafed 
“to exprefs her approbation of his fon’s at- 
tention and good conduét, by conferring 
the fame title upon him, to the fame ex- 
tent; and the Grand Duke prefented him 
with a fuperb gold fnuff-box, richly fe 
with diamends, as a teftimony of his re- 
gard. 
There was further granted tothem and 
their lawful defcendants, leave and-permif- 
fion to take, ufe, and add, to their prefent 
arms, a black wing of the f{pread eagle of 
the Imperial Ruffian Arms, in a gold 
fhield placed in the middle, with the cuf- 
tomary helmet over the fhield, adorned 
with the Baron’s coronet. . 
After theis recqvery, a confiderable 
number of perfons of the firft refpeCtabi- 
lity were inoculated with fuccefs at St. 
Peterfourgh; and the fatisfaétion this 
event afforded, induced her Imperial Ma- _ 
jefty humanely to requeft of him to under~ 
take a journey to Mofcow for the fame 
ufeful purpofe: this ftep was immediately 
adopted, and there alfo many of the nobi- 
lity and of the principal inhabitants availed 
themfelves of the maternal attention of the 
Emprefs to inoculate their children. 
The great munificence of the Emprefs 
on this occafion was unprecedented; but 
its value was materially enhaneed by the 
unbounded confidence fhe was pleafed te 
place in him. She invited him ftrongly to 
continue to refide as her Phyfician in 
Ruffia, affuring him that every circum- 
ftance of accommodation that he could 
wifh for his family and himfelf fhould be 
fully complied with. His anxiety to re- 
turn made him decline thefe very honour- 
able offers: and on his journey he was 
much diftinguifhed by the attentions he 
received. When he paffed through Berlin, 
the late Frederick the Thifd invited him, 
by his Prime Minifter, to an audience at 
Potfdam; accordingly on the following 
day he and his fon went thither, and were 
. received 
