Your letter of Decr. 29, with its enclosures came safe to hand. The paper containing the Galvanic Experiments, is very curious & attractive. The effect of the fluid, in mimicking vital action though of little avail in a search for the secret principle of vitality, a ray of light to the physiologist.

I hope the General Assembly will not be long insensible to the object of the Memorial; enforced as it is by the considerations so persuasively set forth in the Documents

Of the Essay on the Nervous System, I can say only, that to its literary merit, it adds a scientific value, to readers as little adepts in the subject as myself.

I am aware of the tardiness in offering my thanks for your polite communications, and must refer for an apology, to my condition as explained in the call with which you favored me. With my thanks be pleased Sir to accept assurances of my esteem and my cordial salutations