COMPARATIVE FUNCTIONAL MORPHOLOGY OF THE STAUROMEDUSAE

1963 ◽  
Vol 41 (5) ◽  
pp. 741-752 ◽  
Author(s):  
Michael Berrill

Considerable variation in the gastrovascular system occurs among the two families of the Stauromedusae, or stalked jellyfish. These variations are illustrated by decriptions of three New England species, Lucernaria quadricornis, Haliclystus salpinx, and Thaumatoscyphus atlanticus, and are correlated with changes in the organization of the other, associated structures. Some misconceptions concerning the true significance of the gastric pockets are clarified. A coordinated comparison is made of the functional morphology of the two families, with an interpretation in terms of relative growth processes.

2009 ◽  
Vol 27 (3) ◽  
pp. 549-584
Author(s):  
John M. Lund

In February 1704, a Boston laborer named Thomas Lea found himself surrounded by townspeople as he lay on his deathbed. These spectators had gathered hoping to hear a much anticipated confession of the crimes they believed Lea had committed fifteen years earlier during the Dominion of New England. In Suffolk County, many townspeople had long maintained that Lea and others had used the confusion and chaos generated by the unsettling political and legal transformations introduced to New England during the 1680s to surreptitiously gain legal title to the estate of a prosperous Braintree, Massachusetts, landowner named William Penn. Standing by Lea's bedside, one witness, who believed Lea had perjured himself at the 1689 probate administration of Penn's estate, demanded: “Thomas can you as you are going out of the World answer at the Tribunal of God to the Will of Mr Penns, which you have sworn to[?]” “Was Mr Penn living or Dead when this Will was Made?” In the presence of assembled witnesses, Lea acknowledged, “he was dead.” Other townspeople pressed Lea to reveal the role he played in what many believed had been a murder for inheritance scheme. They reminded Lea that Penn's corpse had been found covered “in blood, in his own dung” with “a hole in his back, that you might turn your two fingers into it” and, even more disturbing, “one of his [Penn's] stones in his codd [scrotum] was broken all to pieces.” Averting the onlookers' gaze, Lea “turned his head aside the other way, saying what I did I was hired to do.” For these witnesses, the death-bed confession confirmed the rumors of Lea's crimes and strengthened their belief that a wave of corruption introduced in the 1680s had sabotaged New England's distinctive Puritan jurisprudence. Indeed, townspeople had labored for years to overturn the 1689 probate of Penn's estate in an effort forestall the crown's efforts to bring New England into political and legal conformity with the dictates of the growing English empire.


2015 ◽  
Vol 95 (1) ◽  
pp. 20-26 ◽  
Author(s):  
E.M. Mostafa ◽  
A.M.A. Hassan

Exposure ofAzollaplants to UV-B radiation for 6 h resulted in a decrease in biomass and relative growth rate (RGR), which coincided with an increase in doubling time (DT) as compared with the control. Also, the protein content decreased. On the other hand, hydrogen peroxyde (H2O2) and malondialdehyde (MDA) accumulated significantly in UV-treatedAzollaplants. Conversely, the addition of selenium (Se) at 1 ppm resulted in a significant increase in biomass and protein content of untreated and UV-treatedAzollaplants, and a significant reduction in both H2O2and MDA. Moreover, the addition of Se to UV-treated and untreatedAzollaplants resulted in a significant increase in total ascorbate and total glutathione (GSH) contents compared with the control and UV-stressedAzollaplants. Also, glutathione redox potential (GSH/TG) increased significantly in UV-treatedAzollaplants in the presence of Se. There also was a significant increase (38%) in ascorbate peroxidase (APX) activity in UV-treated plants compared with the control. APX activity in the presence of Se did not change significantly compared with the control. Glutathione reductase (GR) activity increased significantly in UV-treatedAzolla, while glutathione peroxidase (GSH-PX) activity did not. On the other hand, both GSH-PX and GR activity in untreated and UV-treatedAzollaplants were significantly enhanced by the application of Se to the nutrient media at a concentration of 1 ppm. Therefore, we can conclude that Se protectsAzollaplants from UV-B stress.


1994 ◽  
Vol 126 (3) ◽  
pp. 667-672 ◽  
Author(s):  
Ross T. Bell

AbstractIn Rhysodini the greatly enlarged mentum forms the entering edge as the beetle wedge-pushes its way through wood. The mandibles cannot bite either wood fibers or food items, but function as a cover for the other mouthparts. The palpi are completely retractile. Each maxilla bears two stylets, the galea and lacinia, and the ligula consists of two bilobed structures. These are apparently the sole feeding structures enabling the beetles to prey on the amoeboid stage of slime molds. The large internal cavity of the head is interpreted as a compromise between a greatly reduced head volume, resulting from reduced jaw musculature, and the need to retain the surface of a full-sized head as part of the wedge-pushing apparatus.


2018 ◽  
Vol 87 (4) ◽  
pp. 1003-1028
Author(s):  
Sandra Slater

This piece explores the origins of the anomalous 1655 New Haven statute against sodomy that broke with legal traditions and codes both in England and New England. A lengthy and extraordinarily specific piece of legislation, the New Haven law stands in stark contrast to the minimalist language favored by the English in the early seventeenth century. When viewed within the larger context of clerical animosities, particularly between Thomas Hooker and John Cotton, there is a strong circumstantial case to make for its implementation as an extension of John Cotton's rejected Massachusetts Bay legal code,Moses His Judicials, applied by his friend and admirer John Davenport in New Haven. A devout disciple of John Cotton, John Davenport's New Haven colony relied on Cotton's influence and stood as a rebuke to Thomas Hooker's Connecticut settlements, often criticized as too spiritually lax by those in Massachusetts Bay and New Haven. While seeking to demonstrate greater piety and rigidity, John Cotton and Thomas Hooker sought to exert dominance over the other, with Cotton employing Davenport's colony as an effective castigation of Hooker's perceived liberality. This piece is reflective of trends in studies of sexuality which suggest that ideas and identities related to sexuality do not operate in isolation, but often mirror anxieties not necessarily connected to the regulation of sexual activities. This article situates the 1655 Sodomy Statue within a broader context in order to understand its origins and animosities that potentially motivated its inclusion into the New Haven legal statutes.


Antichthon ◽  
1986 ◽  
Vol 20 ◽  
pp. 21-24 ◽  
Author(s):  
Benjamin D. Meritt ◽  
Malcolm F. McGregor

This is the text of Meritt, McGregor and H.T. Wade-Gery published in ATL as D 22, except that has replaced their in line 20.In 1980 the restoration of line 22 was challenged by A.S. Henry: Vindex Humanitatis, Essays in Honour of John Huntly Bishop, edited by B.A. Marshall (University of New England Publishing Unit, Armidale), 17-33. He pointed out that is a reflexive pronoun, which must refer to the subject of the verb to which it is attached. The subject of on the other hand, is ; our restoration, he concluded, is therefore impossible.


1987 ◽  
Vol 65 (8) ◽  
pp. 1638-1642 ◽  
Author(s):  
L. A. C. J. Voesenek ◽  
C. W. P. M. Blom

Root development and architecture were studied in three Rumex species growing in a perforated soil system in the greenhouse. Distinct differences in vertical root distribution under drained conditions were found among the three species. Rumex acetosa and R. palustris had a relatively superficial root pattern, whereas in R. crispus much of the root growth was concentrated in lower soil layers. In the upper soil layer the relative growth rate of the roots of R. palustris was significantly larger than that of the other species. A relation between the characteristic rooting patterns under drained conditions and the Rumex zonation in the field is discussed.


2010 ◽  
Vol 90 (7) ◽  
pp. 1385-1393 ◽  
Author(s):  
L.F.C. Dumont ◽  
F. D'Incao

Biometric relationships of size and weight were estimated for the Argentinean prawn (Artemesia longinaris), a new commercial penaeid prawn exploited in the south-western Atlantic. Morphometric and meristic traits were used to elucidate population structure of this species along its distribution area. The morphological relationships were estimated by a simple linear regression, considering total length (TL) as the dependent variable. The males collected in southern Brazil, an area under influence of the Subtropical Convergence, presented a slightly lower TL increment than females. A marked reduction in slopes of males between populations from southern Brazil was observed in autumn and winter. Additionally, relative growth in length of males from Argentina is similar to that observed during autumn and winter in southern Brazil. The other morphometric and meristic variables used also indicated higher similarities between southern Brazil and Argentina, which may be explained by relative growth associated to water temperatures or migration during winter, taking advantage of the oceanographic systems connecting both sites. Moreover, the population from Rio de Janeiro seems morphologically apart from the others, forming a separate unit stock.


1977 ◽  
Vol 51 (3) ◽  
pp. 326-340
Author(s):  
Carl Gersuny

Whatever the shortcomings of “no-fault” employee compensation laws, such as the one passed in Massachusetts in 1911, Professor Gersuny shows that such laws were a great improvement over what had prevailed. Working with formerly confidential files, he shows that an “adversary relationship” had existed between the employer and his insurance company, on the one hand, and often pitifully maimed employees on the other. With few exceptions, all of the advantages were on the side of the employer, and the rights of employees to more than token compensation were routinely trampled upon.


1980 ◽  
Vol 85 (1) ◽  
pp. 205
Author(s):  
B. R. Burg ◽  
Peter N. Carroll

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