Another species noticed by Michaux, and included in all our books as the _R. dimidiata, L._ has long been familiar to the southern botanists. Whether this be the _dimidiata_ found also on the sandy shores of India, or the _compressa_ of the same country, as suggested by _Mr. Elliott_, or a species distinct from either, I am not prepared to determine. But I have collected this plant in the Bermudian Isles, at Rio de Janeiro, and Bahia, on the Brazilian coast, and lastly on the island of Flores, near one hundred miles from the mouth of the Rio de la Plata, as well as on the main in the Banda Oriental. ART. VII. _Floral Calendar kept at Deerfield, Massachusetts, with Miscellaneous Remarks, by Dr._ STEPHEN W. WILLIAMS, _of Deerfield._ _To Professor Silliman._ SIR, Any thing which has a tendency to elicit facts with regard to the climate of a country must be interesting. I believe that observations upon the time of the germination, foliation, florification, and fructification of plants, afford a much more correct criterion respecting climate than thermometrical, or other meteorological journals. They should be made at the same time in various parts of the country, and for several years in succession. I send you a Calendarium Floræ, with miscellaneous remarks, made in Deerfield, Massachusetts, during a part of the years 1811, 1812, and 1818, which, if you please, you may insert in your valuable Journal. Latitude of Deerfield, 42° 32′ 32″, longitude 72° 41′. 1811. _March_ 1. Blackbirds arrived. 15. Black ducks arrived. Bees out of the hive. 20. Early garden peas, lettuce, and peppergrass sown. 28. The woods were swarming with pigeons. Wild geese passed over. The greater part of the month of March was warm and pleasant. The sugar-maple yielded its sap profusely for a few days, but the nights were so warm that much less than the usual quantity of sugar was made this year. _April_ 1. Frogs begin to sing. Peas and oats sown. 8. Buds of the lilac, (_Syringa vulgaris_) the small red rose, the elm, (_Ulmus Americana_) the apple, and the peas considerably swoln. 14. Dandelion (_Leontodon taraxicum_) in full flower. 20. Indian corn planted; a few garden seeds sown. Martins and bank swallows arrived. Leaves of the currant and gooseberry expanded. Weather for a few days past sultry and smoky. 21. Blue violet (_Viola cucullata_) in full flower. Shad-bush (_Aronia Botryapium_) in blossom. Flower-buds of the lilac swoln; likewise the flower-buds of the cherry, pear, and apple. 23. Blood-root (_Sanguinaria Canadensis_) in full flower. 25. Asparagus fit for the table. 26. Chili strawberries in flower; this plant begins to blossom early, and continues to flower late in the season. English cherry, black heart (_Prunus cerasus_) in full flower. 27. Garden violet (_V. tricolor_) in full flower.