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A prophetic challenge to the Church (recurso electrónico) : the last word of Bartolomé de las Casas / Luis N. Rivera-Pagán

In 1566, after more than five decades of immense and exhausting endeavors to influence and shape the policy of the Spanish state and church regarding the Americas, years of drafting countless historical texts, theological treatises, colonization projects, prophetic homilies, juridical complaints, political utopias, and even apocalyptic visions, Bartolomé de las Casas knows very well that the end is at hand: the end of his life and the end of his illusions of crafting a just and Christian empire in the New World. It is a moment of searching for the precise closure, the right culmination and consummation of a human existence that since 1502 had been intimately linked, as no other person of his time, to the drama of the conquest and Christianization of Latin America, a continent, as has been so aptly asserted, “born in blood and fire
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A quarter century of variation in color and allometric characteristics of eggs from a rain forest population of the Pearly-eyed thrasher (Margarops fuscatus)

Eggs color, size, and shape vary considerably within and among female Pearly-eyed Thrashers (Margarops fuscatus). Results of a 25-yr study (1979-2004) are presented to provide comparative data. In a sample of 4,128 eggs, typical shape was prolate spheroid; but several variations were observed, depending on the age, stature, and physiological condition of the female, as well as environmental influences such as the availability of essential nutrients. Froms a subset of 3,867 eggs measured between 1979 and 2000, a species-specific egg shape, or elongation index of 1.44 was derived (mean=1.44; SD=0.07; range = 0.93-1.85). Pooling eggs from among completed clutches of 1-4 eggs in each (mode=3), the average egg measured 32.40 mm in length (SE= 0.02; range = 18.13-38.97 mm) and 22.50 mm in breadth (SE=0.01; range =16.81-33.61 mm). Observed average fresh egg mass for a set of 3,581 eggs was 8.8 g. Of three standard formule used to predict average fresh egg mass, Rahn et al. (1985) was the most accurate (8.7 g). Averaging five standard formulae resulted in an egg volume of ca. 7.0 cm3. In the Pearly-eyed Thrasher, egg size and mass tended to decrease just as it does in several on-passerine species. Light clutch mass relative to body mass is a preadaptation that increases Margarops' potential of laying more clutches throughout its reproductive life, thus enhancing its lifetime reproductive success and ensuring its continual survival in the region
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A retomar la iniciativa de nuestra lucha : empújalo que cae

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A todas las mujeres de la sociedad puertorriqueña...

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¿A trabajar por el Vieques que queremos!

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A tropezones con el prejuicio

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A veces... (poema) / Edgardo López Ferrer

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Abro la puerta y doy la bienvenida (poema) / Beatriz Santiago Ibarra

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Abstracts from scientific forum

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La Academia Media de Arcesilao y la dinastía atálida de Pérgamo / Rubén Soto Rivera

Exploración histórica de la 'Academia Media' de Arcesilao y de los problemas filosóficos y las doctrinas que se plantearon en la Antiguedad en torno de ella.
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