Self-recognition in primates: phylogeny and the salience of species-typical features.

Self-recognition has been explored in nonlinguistic organisms by recording whether individuals touch a dye-marked area on visually inaccessible parts of their face while looking in a mirror or inspect parts of their body while using the mirror's reflection. Only chimpanzees, gorillas, orangutans, and humans over the age of approximately 2 years consistently evidence self-directed mirror-guided behavior without experimenter training. To evaluate the inferred phylogenetic gap between hominoids and other animals, a modified dye-mark test was conducted with cotton-top tamarins (Saguinus oedipus), a New World monkey species. The white hair on the tamarins' head was color-dyed, thereby significantly altering a visually distinctive species-typical feature. Only individuals with dyed hair and prior mirror exposure touched their head while looking in the mirror. They looked longer in the mirror than controls, and some individuals used the mirror to observe visually inaccessible body parts. Prior failures to pass the mirror test may have been due to methodological problems, rather than to phylogenetic differences in the capacity for self-recognition. Specifically, an individual's sensitivity to experimentally modified parts of its body may depend crucially on the relative saliency of the modified part (e.g., face versus hair). Moreover, and in contrast to previous claims, we suggest that the mirror test may not be sufficient for assessing the concept of self or mental state attribution in nonlinguistic organisms.

A membrane-associated form of sucrose synthase and its potential role in synthesis of cellulose and callose in plants.

Sucrose synthase (SuSy; EC 2.4.1.13; sucrose + UDP reversible UDPglucose + fructose) has always been studied as a cytoplasmic enzyme in plant cells where it serves to degrade sucrose and provide carbon for respiration and synthesis of cell wall polysaccharides and starch. We report here that at least half of the total SuSy of developing cotton fibers (Gossypium hirsutum) is tightly associated with the plasma membrane. Therefore, this form of SuSy might serve to channel carbon directly from sucrose to cellulose and/or callose synthases in the plasma membrane. By using detached and permeabilized cotton fibers, we show that carbon from sucrose can be converted at high rates to both cellulose and callose. Synthesis of cellulose or callose is favored by addition of EGTA or calcium and cellobiose, respectively. These findings contrast with the traditional observation that when UDPglucose is used as substrate in vitro, callose is the major product synthesized. Immunolocalization studies show that SuSy can be localized at the fiber surface in patterns consistent with the deposition of cellulose or callose. Thus, these results support a model in which SuSy exists in a complex with the beta-glucan synthases and serves to channel carbon from sucrose to glucan.

Emissions from the Pyrolysis and Combustion of Different Wastes

Paper submitted to the 7th International Symposium on Feedstock Recycling of Polymeric Materials (7th ISFR 2013), New Delhi, India, 23-26 October 2013.

Payment order for Josiah Cotton, 1722 September 10

Handwritten order to Penn Townsend to pay scholarship funds to student Josiah Cotton (Harvard AB 1722), signed by Benjamin Wadsworth, Thomas Foxcroft, Samuel Marshall, and Jonathan Williams.

Payment order for Rowland Cotton, 1726 October 17

Handwritten order to Penn Townsend to pay scholarship funds to Rowland Cotton on behalf of his son Ward Cotton (Harvard AB 1729), signed by Thomas Foxcroft, John Marion, Samuel Marshall, and Jonathan Williams.

" Banish the self debasing principles, and scorn the disingenuity of readers. Humility has depressed many a genius into a hermit" : commencement essay, 1793

Two-page handwritten essay composed for the July 17, 1793 Harvard University Commencement by an unattributed author. The title is a quote from William Shenstone's essay "On Allowing Merit in Others." The essay begins, "Notwithstanding Philosophers have ever considered the human mind as a simple being..."

Letter from John Avery to Cotton Tufts, 1790 April 9

A handwritten invitation from John Avery to Cotton Tufts for a meeting of the Harvard Board of Overseers' "Committee to enquire into the state of the College" on April 13, 1790.

An elegie on the deplored decease of that truly pious and religious matron, Mrs. Sara Leveret: relict of the late hon[or]able John Leveret, Esq., sometime governor of his then Majesty's colony of the Massethusets [sic] Bay in New England : manuscript, 1704

Autograph copy, signed.

History of the Cotton family : manuscript, [ca. 1728]-1755

History of the Cotton family with biographical information on Cotton, his mother, father, siblings, and some distant relations, including information on the Rosseter family, his mother's family line; often with transcripts of family letters. Also contains further genealogical information added by a later hand.

Popery a complex falsehood: or an attempt to clear and evidence, that it is so, in a lecture had at Harvard College in Cambridge, New England, on May 10th, 1769

The hand-sewn notebook contains a 30-page manuscript draft of the Dudleian lecture delivered by Samuel Mather on May 10, 1769 at Harvard College. The sermon begins with the Biblical text 2 Thess. 11:11, 12. The copy includes a small number of edits and struck-out words. The item has unattached pages and is in fragile condition. The lecture was never published.

The cotton industry in Peru /

Mode of access: Internet.

Cotton in Argentina /

Mode of access: Internet.

A chemical study of the Sea Island cotton seed /

Mode of access: Internet.