A French merchant, at Guayra, named Delpech, in 1806, had occasion to receive several travellers, inhabitants of those countries. The apartments destined for visitors being filled, and the number of his guests increasing, he was under the necessity of putting several of them in rooms occupied by _cinchona_. Each of them contained from 8 to 10 thousand pounds of that bark. One of his guests was ill of a very malignant fever. After the first day he found himself much better, though he had taken no medicine; but he was surrounded with an atmosphere of cinchona which appeared very agreeable to him. In a few days he felt himself quite recovered without any medical treatment whatever. This unexpected success led M. Delpech to make some other trials. Several persons, ill of fever, were placed successively in his magazine of cinchona, and they were all speedily cured, simply by the effluvia of the bark. In the same place with the cinchona, he kept a bale of coffee, and some bottles of common French brandy. In some time M. Delpech, when visiting his magazine, observed one of the large bottles uncorked. He suspected at first the fidelity of a servant, and determined to examine the quality of the brandy. What was his astonishment to find it infinitely superior to what it had been!--A slightly aromatic taste added to its strength, and rendered it more tonic and more agreeable. Curious to know if the coffee had likewise changed its properties, he opened the bale, and roasted a portion of it. It was more bitter and left in the mouth a taste similar to that of the effluvia of bark.--The bark which produced these singular effects was fresh. Would the cinchona of commerce have the same efficacy? _Oil of Pumpkin Seed._ C. S. KAPINESQUE, Esq. to Doct. SAMUEL MITCHELL. _New York, 20th Feb. 1819._ While I was at Harmony, on the banks of the Wabash, in the state of Indiana, last summer, I was told by the industrious German Society of the Harmonites, that instead of throwing away or giving to the pigs the seeds of their pumpkins, as is usually done all over the country, they collected them and made an oil from them which they use for all the purposes of lamp oil and olive oil. It is well known, that all the different species and varieties of pumpkins (genus _cuburbita_ Linnæus) afford an oil which has valuable medical properties, possessing in the highest degree the refrigerative quality; but I had never heard before of its being made on a large scale, and for economical uses.