Indenture between William Dickson [Jr.] and Robert M. Wilson, February 7, 1859.

William Dickson (1799-1877) was the son of the prominent Niagara businessman and politician William Dickson (1769-1846). William was educated in Edinburgh, Scotland, and settled in Galt, Ontario, upon his return to Canada. His father had business affairs in Dumfries and Galt, which he left in his sons charge when he retired to Niagara in 1837. William had an older brother, Robert, and younger brother, Walter, both of whom served in the Militia and became involved in politics.

Estudios biográficos

UANL

A new calibrated sunspot group series since 1749: statistics of active day fractions

Although the sunspot-number series have existed since the mid-19th century, they are still the subject of intense debate, with the largest uncertainty being related to the "calibration" of the visual acuity of individual observers in the past. Daisy-chain regression methods are applied to inter-calibrate the observers which may lead to significant bias and error accumulation. Here we present a novel method to calibrate the visual acuity of the key observers to the reference data set of Royal Greenwich Observatory sunspot groups for the period 1900-1976, using the statistics of the active-day fraction. For each observer we independently evaluate their observational thresholds [S_S] defined such that the observer is assumed to miss all of the groups with an area smaller than S_S and report all the groups larger than S_S. Next, using a Monte-Carlo method we construct, from the reference data set, a correction matrix for each observer. The correction matrices are significantly non-linear and cannot be approximated by a linear regression or proportionality. We emphasize that corrections based on a linear proportionality between annually averaged data lead to serious biases and distortions of the data. The correction matrices are applied to the original sunspot group records for each day, and finally the composite corrected series is produced for the period since 1748. The corrected series displays secular minima around 1800 (Dalton minimum) and 1900 (Gleissberg minimum), as well as the Modern grand maximum of activity in the second half of the 20th century. The uniqueness of the grand maximum is confirmed for the last 250 years. It is shown that the adoption of a linear relationship between the data of Wolf and Wolfer results in grossly inflated group numbers in the 18th and 19th centuries in some reconstructions.

[Zusätze u. Verbesserungen z. Judenordnung v. Jahre 1749 ... welche Contracte zu den wucherlichen gehören ...]

Wilhelm der Neunte, Landgraf zu Hessen ... so geschehen Wilhelmshöhe den 20ten August 1800

The poetical works of William Shenstone : with the life of the author and a description of the leasowes

William Shenstone

£ taken by Branch Scholars from December 1, 1798-1800

Two-page document containing financial calculations related to Croswell's day and evening students.

Plan for arranging library catalogues,1795-1800; 1822

This paper notebook contains six pages of financial entries made by Croswell between 1795 and 1800, followed by a bibliographical plan for the arrangement of the Harvard College Library, dated September 1822.

Payment order for Martha Thayer, 1800 March 26

Handwritten order to John Sale to pay scholarship funds to Martha Thayer for use by her son Andrew Eliot Thayer (Harvard AB 1803), signed by William Emerson, David Tilden, and James Morrill.

Payment order for Martha Thayer, 1800 December 8

Handwritten order to John Sale to pay scholarship funds to Martha Thayer for use by her son Andrew Eliot Thayer (Harvard AB 1803), signed by William Emerson, David Tilden, and James Morrill.

[Letter from William Emerson to John Sale], 1819 December 3

Letter signed by William Emerson requesting John Sale pay the scholarship funds. The author of the letter is likely the son of the Reverend William Emerson, who died in 1811. William Emerson (1801-1868) received an AB from Harvard in 1818; his brother Ralph Waldo Emerson (Harvard AB 1821) received the Penn Scholarship from 1817 to 1820.

Notes/Observations on the Trinity by William Jones, ca. 1784

These appear to be Parmele's notes on a work by the scholar William Jones (1726-1800) regarding the Catholic doctrine of the Trinity.

Letter from John Henry Tudor to his father, William Tudor, November 10, 1796

This letter was sent to Tudor's father in London, England in care of Thomas Dickason & Co.

Letter from John Henry Tudor to his brother, William Tudor, 1796

Tudor wrote this letter on a "Saturday morn[ing]." Although he wrote "1896" on the exterior, he presumably meant 1796.

Letter from John Henry Tudor to his father, William Tudor, June 1, 1797

This letter was sent to Tudor's father in London, England in care of Thomas Dickason & Co.