BRIDGEWATER, April 6, 1832. Having a convenient opportunity of sending to you, I improve it to acknowledge the receipt of your letter of October 6, and of the very interesting and valuable package of plants which was duly received a few weeks afterwards. In the course of the ensuing summer, I shall be able to supply you with an additional supply of most of the plants mentioned in your list. Many of these were collected during an excursion to the western part of the State, and are not found in this section of the country. I have given a copy of this list to my friend Dr. N. W. Folwell of Seneca County, an industrious collector, who is situated in a section rich in plants, and requested him to transmit specimens of these and other interesting plants to you. I think he will be able to furnish you with many interesting plants from that section of country, and I shall be grateful for any favors you may have in your power to confer upon him. I shall be engaged the ensuing summer at Fairfield and at Salina, where I hope to make some interesting collections in natural history. If it is not too much trouble and the specimen is within your reach, may I ask further information with regard to No. 34, in my last package to you. It is a Carex, from the shore of Lake Erie,--growing with C. lupulina but flowering later. Is it not a var. of C. lupulina? from which it appears to differ principally in its pedunculate spikes? It flowers a month later than C. lupulina (August 6). Will you excuse me for troubling you on another subject? I shall not be able to remain much longer in this place, unless I engage in the practice of medicine under circumstances which will altogether preclude me from paying any further attention to natural history. My friends advise me to spend a few years in a milder climate, our family being predisposed to phthisis, although I am perfectly healthy and robust; and such a course would be very agreeable to me, as I could combine the study of natural history with the professional business which will be necessary for my support. I have thought of the Southern States, but I have for some time been inclined to prefer Mexico, both on account of the salubrity of its climate, and of its botanical and mineralogical riches, which so far as I know have never been very thoroughly explored. My object in troubling you with all this is merely to obtain some information with regard to the natural history of that country. Has the country been explored by any botanist since Humboldt in 1803? And is there still room enough in that branch to repay one for devoting a few years to its investigations?