In the Beginning: The First Sources of Light and the Reionization of the Universe

The formation of the first stars and quasars marks the transformation of the universe from its smooth initial state to its clumpy current state. In popular cosmological models, the first sources of light began to form at redshift 30 and reionized most of the hydrogen in the universe by redshift 7. Current observations are at the threshold of probing the hydrogen reionization epoch. The study of high-redshift sources is likely to attract major attention in observational and theoretical cosmology over the next decade.Comment: Final revision: 136 pages, including 42 figures; to be published in Physics Reports 2001. References updated, and a few minor corrections made. In this submission, several figures were compressed, resulting in just a slight reduction in quality; a postscript file with the full figures is available at http://www.cita.utoronto.ca/~barkana/review.htm

Chemotaxis under agarose utilizing human serum depleted of C-5 derived peptides

An immunoabsorbent column was made with antibody to trypsinized human C5. This column removed the chemotactic activity from zymosan-activated serum as well as from C5a des-arg-enriched fractions. Anti-trypsinized C5-absorbed human serum was substituted for unabsorbed human serum in the chemotaxis under agarose system. This resulted in significantly reduced random neutrophil migration with a negligible effect on C5a des-arg or FMLP-directed migration. The results indicate that much of the random migration observed in the chemotaxis under agarose system is due to C5-derived peptides present in normal human serum.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/24252/1/0000515.pd

Specimen Book of Flowers, Fruits, and Trees

Green cloth back boards portfolio in three parts, accordion folded, plates held together with pink cloth banding. Item illustrated with 144 colored plates, including 16 pouchoir, many chromolithographs (some finished by hand), some handcolored photographs, and photomechanical prints. Plates printed by Rochester Litho. Co., Vredenburg & Co., Stetcher Litho. Co., and Webster & Ablee, all of Rochester, N.Y.ARKANSAS BLACK. Fruit large, round, oblong, covered all over with a very dark red, much darker than Wine Sap. Flesh orange yellow. A splendid keeper. SAN JACINTO. Somewhat similar to Red June; but larger, finer, more vigorous and productive, extra good, don't miss it. Ripe last of June. TRANSCENDENT CRAB. Medium, prolific, strong grower. Very valuable for jelly and preserves. JONATHAN. A very beautiful dessert apple. Its great beauty and productiveness in all soils unite to recommend it to all orchard growers. Good. Rochester Li[t]hographing and Printing Co., Rochester, N.Y., No. 17 BEN DAVIS. One of the best known and most popular apples grown. A free grower. Good for south and west. Rochester Lithographing and Printing Co., Rochester, N. Y., No. 19 WINE SAP This is not only a good apple for the table, but is one of the finest cider fruits. Tree very hardy: an early bearer. Flesh firm and crisp, with rich, high flavor