Example 1. An exponential curve. My topic is best introduced by an example. I take it from the correspondence between Leibniz and Huygens in 1690-1691. Leibniz wrote about his new differential and integral calculus. Huygens was very skeptical and proposed problems for Leibniz to solve. In the course of this exchange Leibniz came to use an exponential equation to represent a curve. This was enti...

Ideal point discriminant analysis is a classification tool which uses highly intuitive multidimensional scaling procedures. However, in the last paper, Takane wrote about it. He concludes that the interpretation is rather intricate and calls that a weakness of the model. We summarize the conditions that provide an easy interpretation and show that in maximum dimensionality they can be obtained ...

^hen Welch (1955) reported his first experimental 'yer transplants in dogs, he wrote "it is interesting to ^Peculate about the possibilites of transplanting the ^Uman liver in part or as a whole. The two problems donation and technique of operation seem by themSelves to be insurmountable obstacles with our preSent knowledge. Nevertheless, if some kind of assisance from a donor liver were availa...

DPByrnes Not so very long ago a solitary skier was making his rapid way down a lonely mountain when he miscalculated and launched himself over a precipice. He was falling to what he thought was certain death when he managed to grab the proverbial small bush projecting from the cliff face. He hung in abject terror for some moments and then began to call out for help. "Is anyone out there?" he cr...

We present a study of helium rich atmospheres in the interval He/H 0.1–1.0 as derived from fully consistent model computations for effective temperature (from 15000K up to 32000K) and surface gravity (log g=3.5 and 4.0). Also the basic diagnostic tools are re-examined, particularly, broad-band UBV and intermediate photometric systems, hydrogen line profiles, continuum fluxes and helium equivale...

The diary of Thomas Graham, a naval ship surgeon, brings the voyage of HMS troopship Apollo in 1849 to life. A year after England's second great cholera outbreak, the pervasive fear of the disease became a reality onboard when cholera broke out. The intended voyage from England to China was diverted to South America where the ship was put into quarantine. So bad were the conditions onboard that...

In January 1940, London was not the most peaceful place in the world, but it was in that month that V. B. Wigglesworth, known to entomologists as VBW, submitted one of his best papers to The Journal of Experimental Biology. VBW was an exceptional scientist in many ways. He was original, reflective and a superb experimentalist, and made the field of insect physiology almost single handed. He pub...

Circumcision is one of the most commonly performed surgical procedures [1]. What about the Ibos or Igbos, one of the main ethnic groups in Nigeria!? In this context, Basden [2] a British anthropologist, lived among them for many years. His researches showed that this group has similarities with the Hebrews. Indeed, he wrote that “Ibos” is a shortened form of “Hebrews”! Of their listed similarit...

About the Author John E. Janssen chaired Standards Project Committee (SPC) 62, which developed ANSI/ASHRAE Standard 62–1989, Ventilation for Acceptable Indoor Air Qualtiy and also served on the SPC that wrote Standard 62–1981. Until his retirement, he was a principal research fellow at Honeywell. Janssen has authored several Journal articles, including “The V in ASHRAE, An Historical Perspectiv...

That form of inflammation which attacks the apposed pleural surfaces lining the base of the lung and the diaphragm has been recognised from of old by physicians. M. Gueneau de Mussy* wrote a memoir on the subject about the year 1853, and he mentions that "the ancients considered delirium to be an urgent symptom of inflammation of the diaphragm, whence arose one of the terms applied to the struc...