{"content":[{"text":"Hammen, L. van der 1989 . An Introduction to Comparative Arachnology. SPB \n Academic Publishing, The Hague . 576 pp . 302 figs . (Price $150 .00) .","bbox":{"left":0.096066,"top":0.026855,"width":0.7322980000000001,"height":0.036104999999999984}},{"text":"Progress in comparative arachnology suffers from the absence of an \n authoritative and accessible introductory text that outlines our current \n understanding of arachnid evolution, explains important controversies and \n suggests profitable avenues for research. Despite the promise of its title, van der \n Hammen's book is not an attempt to fill this vacuum . In fact, the author informs \n us at the outset that it is \"not a handbook but a general survey of personal \n insights .\" It is primarily a review of van der Hammen's descriptive studies, and \n the author makes no real effort to summarize discoveries or opinions of other \n workers . Arachnologists familiar with van der Hammen's research will find little \n new information, but the book may serve as a reference for those requiring access \n to a summary of van der Hammen's contributions to arachnology . \n The book is divided into two sections, a 70-page \"general part\" and a 500-page \n \"systematic part\" . There is a list of references that includes most of the important \n work in comparative arachnology . \n The general part summarizes basic aspects of arachnid biology, concentrating \n on areas of particular interest to systematists (external morphology, reproduction, \n postembryonic development and phylogeny), but there are no discussions of \n paleontology or biogeography . Van der Hammen gives little attention to internal","bbox":{"left":0.096066,"top":0.077847,"width":0.7407450000000001,"height":0.312309}}],"images_bbox":[],"images_bbox_not_text_overlap":[]}