Donations to the Library: Proceedings of the Royal Horticultural Society, Vol. IV, No. 12—Correspondenzblatt des Naturf. Vereins zu Riga, 14te Jahrgang. Mittheilungen aus dem Osterlande 1 Sept. 1-4, 1860-1864; Kongliga Svenska Vetenskaps-Akademiens Handlingar, 1862; Ofversigt of K. V. Ak. Förhandlingar, 1-10, 1863; Meteorologiska Iaktagelser, 1862; Mémoires de l’Académie Impériale des Sciences de St. Petersbourg, Tome V, Nos. 2-9; VI; 1-12. Bulletin de l’Académie de St. Petersbourg, Tome V, 3-8; VI, 1-5; VII, 1-2; Verhandlingen van het Bataviaasch Genootschap, Deel XXIX, 1862. Tijdschrift voor indesche Taal-Land-en Volkenkunde, Deel XI, 4th Serie, Deel III, Afl. 1-6; Sitzungsberichte der K. bay. Ak. der Wissenschaften, zu München, 1863, II, Heft 2-4; 1864, I, Heft 1-4, Supp. 5; 1864, II; Heft 1-2. Annalen der K. Sternwarte bei München, Band XIII, Supplementband, IV. Botanisk Reise of Axel Blytt, 1864. Beretning af G. P. Sars, 1864. Meteorologische Beobachtungen auf Christiania’s Observatorium, Lieferung 1-4. Monatsberichte der k. preuss. Ak. der Wissenschaften zu Berlin, 1864. Journal d’Agriculture, 1862. Mémoires de l’Académie imp. de Dijon, Ser 2, Tomes 10, 11, 1862, 1863. Société imp. des Sciences Naturelles de Cherbourg, Tomes IX, X. The above-named volumes were presented by the different societies named, through the Smithsonian Institution. Mr. Stearns announced that _Helix infumata_ had been found as far south as Cape Mendocino. REGULAR MEETING, OCTOBER 16TH, 1865. President in the chair. Five members present. The following paper was presented by Mr. Bolander. Remarks on California Trees. BY HENRY N. BOLANDER. NOTE.—Localities given with two !! I have not visited myself. I would also further remark that I am by no means sure of having correctly determined the two oaks—_Quercus Douglasii_ and _Garryana_. It may not be altogether amiss to offer some observations on the distribution and value, as specimens, of some of our trees which I have met with on my various trips over a portion of this State. 1. _Pinus Sabiniana_, Dougl. (Digger Pine.) Invariably disposed over south-hillsides of the interior, occupying the driest expositions—Mount Diablo! Russian River Valley! Geysers! Auburn and Forest Hill! San José Valley! Near Mission San Antonio!! Mountains east of San Diego!! As to its value there are a great many contradictory assertions made by farmers; some assert it yields an excellent wood for yokes and similar objects, while others denounce it as entirely useless. 2. _Pinus Lambertiana_, Dougl. (Sugar Pine.) Pine Mountains near Geysers! Near Cloverdale! Forest Hill! Mountains east of San Diego!! Generally with _Pinus ponderosa_ in groves, occupying the damper localities. 3. _Pinus ponderosa_, Dougl. (Yellow Pine.)