. PHILOSOPHICAL INSTITCTIOH _. —Last night , in _; _Queen StreetHall _/ Prdfessor Thomson delivered his _. ..
... _Speeine Cause ' _of Typhoid , _Typhus , and Relapsing _-Fevers , printed in the _Medico - Chirurgical Society's - Transactions _ _: _- for ' 18 SO ; - o £ _essays - _On : the Identity or Non-identity of _Typhus and Typhoid Fevers ( 1850 ); . ...