Needle aspiration of lymph nodes was used at the beginning of the 20th century to identify parasites in sleeping sickness, secondary syphilis, filariasis, and bubonic plague. In 1921, Guthrie at the Johns Hopkins Hospital described systematic diagnosis of lymph node aspirates using air dried films and Romanowsky staining. This began the modern development of this technique and I intend to summa...

[1] An understanding of climate history prior to industrialization is crucial to understanding the nature of the 20th century warming and to predicting the climate change in the near future. This study integrates the complementary information preserved in the global database of borehole temperatures [Huang et al., 2000], the 20th century meteorological record [Jones et al., 1999], and an annual...

As editors of the special issue, we try to summarize here the historiographic trends of the field.We argue that the field of research is accommodating the diversity of the institutional, social and political developments. But there is no narrative in sight which can explain the psychiatry of the 20th century, comparable to the authoritative coherence achieved for the 19th century. In contrast, ...

Changes in sea level (relative to the moving crust) are associated with changes in ocean volume (mostly thermal expansion) and in ocean mass (melting and continental storage): zeta(t) = zeta(steric)(t) + zeta(eustatic)(t). Recent compilations of global ocean temperatures by Levitus and coworkers are in accord with coupled ocean/atmosphere modeling of greenhouse warming; they yield an increase i...