“Alles ist Blatt”. Über Reichweite und Grenzen der naturwissenschaftlichen Sprache und Darstellungsmodelle Goethes

The essay will elaborate on the following aspects of the selected topic: 1) Goethe's scepticism of language: An apprehension of the almost unbridgeable gap between language and the world of objects constitutes the starting point in his approach to language. — 2) The paradoxical nature of the objective world: The paradoxical character of the realm of natural science is a second starting point: Goethe first attempts the logically ‘impossible’, namely to capture simultaneously that which at a higher level is identical and at the empirical level visibly distinct, that which is both static and changing, the uniformity of the kingdom of nature and its multiplicity; he proceeds to undertake a translation of this into a mode of representation accessible to the mind's eye. — 3) Goethe's scientific models of representation: Goethe's models, which graduate from variation of synonym through the exploitation of multifarious fields of imagery to the free juxtaposition of different text-forms each providing its own perspective, serve to resolve the problems outlined in 1 and 2. Form is cognition, its value being not principally aesthetic but heuristic. 4) The scope and influence of Goethe's language: The product of Goethe's scientific efforts is a standard transparent language, both vivid and explanatory, capable of concisely delineating exceedingly complex circumstances and interactions. Even in some spheres of science its influence extended to the beginning of the twentieth century, facilitating the dialogue between disciplines. — 5) The limitations of this language: One of the clear limitations of this language shows itself to be its close adhension to visual perception: its dread both of abstraction, with its disregard of objective fields of reference, and of the formalised language of mathematics. — 6) The shadow of abstraction: Since the eighteenth century the world has lived in the increasingly dark shadow of an abstraction, which has assumed new dimensions in the laboratory-like world of today. — 7) Distance to Goethe: From a present-day persepective Goethe's science appears as distant legend.     

INDUSTRIAL CENTERS AND REGIONAL GROWTH IN THE PRESENCE OF LOCAL INPUTS*

ABSTRACT. A large proportion of regional production takes place in nontraded goods and services. In addition, significant productivity increases can be observed in some segments of this sector. Starting from these two empirical observations we construct a model of growth in a two-region setting with factor mobility. The growth process is based on endogenous technological change in the nontraded input sector, whose output serves as an input in the production of one of the two final goods, the so-called industrial good. We consider two extreme cases, one with locally limited, the other with interregional knowledge spillovers. Conditions are established under which interior solutions with production of local inputs and steady-state growth in both regions result, and others under which we find a core-periphery pattern with growth concentrated in one region only. The stability of the equilibria is discussed by considering the transition processes. Finally, it is shown that catching-up as well as leapfrogging may occur, if new technologies become available.     

Problems and pitfalls in the diagnosis of linear enamel hypoplasia in cheek teeth of cattle

Prevalence and intensity of enamel hypoplasia have been used as markers of generalized physiological stress during dental development in a wide range of mammalian taxa. We studied cattle (Bos taurus) cheek teeth exhibiting morphological characteristics that are of relevance to the diagnosis of enamel hypoplasia in this and other bovid species. These characteristics were multiple, more or less horizontally arranged (waveform) lines or grooves in the cementum of the tooth crown and the adjacent root area, leading to an imbricated appearance of the cementum. On macroscopic examination of tooth surfaces, these lines resembled linear enamel hypoplasia (LEH). Microscopic analysis of tooth sections, however, revealed that the lines occurred in the cementum only, and that the underlying enamel did not exhibit morphological irregularities. In cheek teeth of older cattle, a thick cementum layer is regularly found in the cervical crown portion and the adjacent root area. Apposition of this cementum is related to the uplifting of the teeth from their alveoli, a process that compensates for the shortening of the tooth crowns due to occlusal wear. In the studied specimens, a pronounced periodic nature of tooth uplifting and the related deposition of cementum is the likely cause for the observed imbricated appearance of the cementum. While this phenomenon may be misinterpreted as representing a case of LEH, presence of enamel hypoplasia in bovid teeth may be overlooked when the defects become filled with coronal cementum and are therefore not apparent on external inspection. This was the case in one of the cattle teeth analyzed by us, in which the hypoplastic enamel defects were, however, clearly discernible in ground sections. Microscopic analysis of tooth sections is recommended for recording of LEH in bovid teeth in cases where macroscopic examination of tooth surfaces alone does not produce unequivocal results.     

An early Miocene ant (subfam. Amblyoponinae) from Foulden Maar: the first fossil Hymenoptera from New Zealand

Kaulfuss, U., Harris, A.C., Conran J.G. & Lee, D.E., 2014. An early Miocene ant (subfam. Amblyoponinae) from Foulden Maar: the first fossil Hymenoptera from New Zealand. Alcheringa 38, 568–574. ISSN 0311-5518.

The ant subfamily Amblyoponinae is presently represented in New Zealand by one endemic species in the cosmopolitan genus Stigmatomma and an introduced Australian species of Amblyopone. The fossil record of the group is restricted to two species of Stigmatomma from late Eocene Baltic Amber. Here, we describe the third fossil record, an Amblyopone-like specimen from the early Miocene of Otago, southern New Zealand, based on a winged male that resembles the extant A. australis Erichson in size, general habitus and characters of wing venation, but also shares features with the African amblyoponine genus Zymmer. This represents the first fossil record of Amblyoponinae from the Southern Hemisphere and the first example of Hymenoptera among the few pre-Quaternary insect fossils known from New Zealand. It suggests a long history of Amblyoponinae in New Zealand and Australia.

Uwe Kaulfuss [uwe.kaulfuss@otago.ac.nz] and Daphne E. Lee [daphne.lee@otago.ac.nz], Department of Geology, University of Otago, PO Box 56, Dunedin 9016, New Zealand; Anthony C. Harris [anthony.harris@otagomuseum.govt.nz], Otago Museum, PO Box 6202, Dunedin 9059, New Zealand; John G. Conran [john.conran@adelaide.edu.au], ACEBB & SGC, School of Earth and Environmental Sciences, The University of Adelaide, Benham Bldg, DX 650 312, Adelaide SA 5005, Australia. Received 18.3.2014; revised 15.5.2014; accepted 23.5.2014.     

Fork formation and other signs of osteophagia on a long bone swallowed by a red deer stag (Cervus elaphus)

A right anterior cannon bone (os metacarpale 3 + 4) of a red deer that was found in the reticulum of a 7-year-old red deer stag is described. The bone, which had accidentally been swallowed by the stag, showed clear signs of bone chewing (osteophagia), the most prominent being the formation of a fork at its distal end. Knowledge of the possible bone changes brought about by ruminant osteophagia may prevent the erroneous interpretation of skeletal remains as being worked by hominids.     

Developmental defects and postmortem changes in archaeological pig teeth from Fais Island,Micronesia

The study investigated developmental defects of the dental hard tissues and postmortem changes in archaeological pig molars from Fais Island, Micronesia. The developmental defects of enamel were indicative of a disturbance of the secretory stage (accentuation of the incremental pattern, occurrence of Wilson bands and of hypoplastic defects) and the maturation stage of amelogenesis (hypomineralisation). Presence of coronal cementum in an M₃ indicated a partial premature breakdown of the reduced enamel epithelium or a partial demise of the enamel organ earlier during tooth development. Developmental defects of dentine presented as accentuated Andresen lines and areas of interglobular dentine. The pattern of developmental defects in the studied molars and the fact that deciduous premolars of the pigs from Fais did not exhibit developmental defects on macroscopic inspection are consistent with the hypothesis that the tooth defects were caused by periods of severe nutritional stress occurring after weaning. Postmortem changes caused by microbial infiltration were recorded in dentine and cementum. A presumed case of soft tissue preservation in the form of presence of odontoblast processes was observed in an M¹.