Introduces Mr Istria, a medical doctor interested in natural history and botany.

Sending Smith eight volumes of the Royal Agricultural Society of Turin via Dr Istria, who is travelling to London with the Marquess of Moss, asks that Smith introduces Istria to the medical establishment. Also sending a dissertation on the propagation of mushrooms, work by Mr Pic and a pamphlet by Mr Bonansea on a new theory on the internal cause of the putrid fever. Has had to postpone sending dried plant specimens. Hopes in future to send the five volumes of the old Royal Academy of Sciences of Turin and the three volumes of the new Royal Academy of Sciences. Thanks Smith for the paper he sent on the "propagation of species" and seeds of 'Smithia' and welcomes his paper on ferns and on any other subject of natural history.