This voyage was from Norfolk to Grenada, Guadeloupe, Mobile, and Philadelphia.

These items contain observations made at Gettysburg, Pennsylvania. The entries for January 1860-September 1865 are duplicates. One series was made under the direction of the Smithsonian Institution and is on the printed forms supplied by that institution. With this are: 2 memoranda by Michael, undated; 2 broadsides, Pennsylvania College of Gettysburg. Order of exercises; April 15, 1851; and Smithsonian institution. Registry of periodical phenomena...

One chart is addressed to Benjamin Franklin, "président de l'Etat de Pennsylvanie et président de la société phylosophique...1789." All or most of the material was sent to Thomas Jefferson as president of the United States and of the American Philosophical Society. Contains also an English translation of the above Observations... Contains also copies made by M. Legaux of tables 2-5.

This journal was kept on a voyage from the Downs to the Capes of Delaware on board the ship Three Sisters, 26 June-20 August, 1803. The volume includes "Observations on the storm glass," made on the same voyage. The storm glass, with an explanation of its use, and the journal of observations are at the American Philosophical Society.

Letters relating to American Indian languages, Moravian missionaries, various Heckewelder publications. Some of the replies from Du Ponceau are copied in the letter books of the Historical and Literary Committee.

This volume was made at Wilmington, Delaware, for determining the longitude, from 1 July-14 October. It records the position of selected stars and planets. Contains also: Note regarding his astronomical clock, and entries relative to his work in continuing the Mason & Dixon's line.

There are observations from 1802 to 1810 made by Heckewelder at Gnadenhütten, Pennsylvania, which continue those he made for 1800 [published in "Philadelphia Medical and Physical Journal" 1,2 (1805): 134]. There are also observations from 1810 to 1814 made by George G. Miller at Beersheba, Ohio, and from September 1-7, 1800 made by Christian Frederick Denke at Fairfield, Upper Canada [the latter printed in "Philadelphia Medical and Physical Journal" 1,2 (1805): 142].

These journals, kept at Madison's plantation, also contain notes on sowing and harvesting, and migration of birds. Some notes are in Dolley Madison's hand.

Featuring the work of at least ten different authors, this collection includes several, unrelated meteorological observations from the mid-18th Century to the early 19th Century. While the majority of these records depict weather patterns in Philadelphia, there are also descriptions for Delaware, New England, London, and South America among others.

Treat sent this volume to Thomas Jefferson in 1809 from "Arkansa in Louisiana," and wrote, "If from their perusal you can derive, either information or amusement, respecting the climate of this part of our country, your acceptance will be highly gratifying."

These logbooks record two voyages (to Corunna, Spain, 1789-1790, and to Oporto, Portugal, 1791, and returns to Philadelphia), with observations of differences in temperature between air and water, especially when passing the Gulf Stream or any land or banks.

This volume is from the voyage of the China Packet from Philadelphia to Canton, China, and return. The concluding statement reads: "One hundred & thirty days from Maccoa out of which time we had 30 Calm days, the longest passage I Ever had from China. With this Journal I have done and glad Am I."

These are daily observations of temperature, humidity, wind, and precipitation kept by Bartram in Philadelphia. He also notes such occurrences as "River [Schuylkill] froze over" (February 7, 1790).

These are notes of lectures and experiments made at Paris as a student at the Jardin des Plantes. The volumes are entitled: Botany & Agriculture (with a large portion actually on electrical machinery); Trees and Shrubs; Chemistry, Physics, Mineralogy; and Zoology.

The first volume contains notes of expenses and of observations while surveying the western boundary of Pennsylvania (1785). Mentions APS under date of Feb. 20, 1784. The second volume contains observations that were continued after Rittenhouse's death to Sept. 30, 1805.

This volume contains medical notes by Wistar, including observations on yellow fever and arguments to prove its foreign origin, facts relative to the progress of the fever in 1797, the infection and death of Colonel Van Emburgh, the infection of the crew of the ship "Deborah" and of the Durham boat (1802), an account of the diseases which afflicted the family of James Hammar in Montgomery County (Pa.), facts relating to the typhus fever of 1812-1813, case histories (1796-1803), temperature chart (1758-1759, 1760), and a thermometrical journal (1760-1765) kept by Charles Norris and copied by Wistar from notes in possession of Joseph Parker Norris.

Jacob Hiltzheimer, farmer and assemblyman, emigrated from Germany to Philadelphia in 1748 and lead a moderately active political and social life. He was a successful farmer and raised select livestock in the city of Philadelphia. He also boarded horses including those of John Penn and George Washington. He served in the Pennsylvania Assembly for 11 consecutive years beginning in 1786. He was an active contributor in civil affairs and took a remarkable enthusiastic interest in events, in persons, and in every day life all of which he wrote down in his diary. As a result of his Revolutionary War and political acquaintances his contacts were numerous. Hiltzheimer's record of social affairs are for the most part routine daily events such as buying and trading horses, attending barbecues and funerals, and drinking punch. However it is his every day accounts that also records significant events such as the Revolutionary War, transactions of the Pennsylvania Assembly, and Philadelphia's yellow fever epidemics, as well as the dealings of significant people including George Washington, Thomas Mifflin, and John Hancock.

This collection includes three journals bound into one volume: two by Willima Dunbar and one by Zebulon Pike. Both manuscripts by William Dunbar document the expedition up the Red and Ouachita Rivers to the Hot Springs of Arkansas in 1804-1805. The "Journal... to the Mouth of the Red River" (200p.) is the fullest available record of the activities of the expedition from the time of their departure from St. Catharine's Landing on October 16, 1804, until their return to Natchez, Miss., on January 26, 1805. The "Journal of a geometrical survey" includes a record of course and distances as well as a thermometrical log and other brief notes. The two are bound together in a volume with Zebulon Montgomery Pike's journal of a voyage to the source of the Mississippi, 1805-1806. The Pike journal documents the expedition to explore the geography of the Mississippi River led by Lt. Zebulon Montgomery Pike in 1805-1806, and his attempts to purchase sites from the Dakota Indians for future military posts, and to bring influential chiefs back to St. Louis for talks. Less a literary masterpiece than a straightforward record in terse military prose, the journal provides a day by day account of the journey and the activities of Pike and his small contingent during this early exploration of present day Minnesota. It was printed with variations and omissions in An Account of Expeditions to the Sources of the Mississippi and through the Western Parts of Louisiana... (Philadelphia, 1810), and was edited in Donald Jackson, ed., The Journals of Zebulon Pike: with Letters and Related Documents (Norman, Okla., 1966).