LATENCY OF AFRICAN COAST FEVER. 23 1 



the winter and extending into spring. Sporogony commences in 

 the Koch's granules, is active in the summer, and continues into 

 part of the autumn months. The lymphocytes (white blood 

 cells) act as the mechanical carriers in the circulatory system, 

 and supply the larvae with the infective elements ; the nymph:e 

 act as vectors, transmitting them to the bovine. Schizogony 

 proceeds in the blood of that host until about July, when the 

 quiescent period again ensues. 



Thus the development demands two periods in cattle and one 

 in the intermediate host, the tick. 



In the microscopical examination for coast fever the proper 

 sequence in the appearance of the various forms will have to be 

 recognised. 



In the macroscopical examination and study of symptoms 

 the respective periods will have to be separated. 



Quiescent Period. — Negative autopsy, low febrile reaction, 

 sporogonal stage infarctions, and other obstructions to the capil- 

 lary system, low and irregular febrile temperatures. 



Schizogonal Period. — High thermic reactions of a progres- 

 sive character. 



]\Iixed infections of the sporogonal and schizogonal stages 

 are very frequent, and it is these, in my opinion, which have 

 caused all the confusion and have hitherto disguised the true 

 life-history of the Theileria parva. 



Mars. — Prof. Arrhenius, in Publications de la Socicte de 

 Chiuiic Physique, compares the concUtion of the planet Mars to 

 that of certain desert parts of Persia, except that he considers 

 the Martian temperature to be about 30° below zero. He thinks 

 that the "lakes" on Mars resemble the khk'irs of Persia, those 

 lakes which possess so high a degree of salinity as to render their 

 waters semi-solid. MM. Antoniadi and Bosler, on November 14, 

 observed the whole of the planet to be of a decided citron tint, 

 including even the polar snow cap. On l^ecember 6, M. Antoniadi 

 records in Astrononiisclic Nachrichten. he observed a large and 

 peculiar brown spot, about 370 miles in length, and of a totally 

 different colour to any other part of the planet, in a western 

 part of the Mare Erythrseum. A fainter spot of apparently 

 similar character has been seen during former years. 



Transmutation of Metals.- It is not surprising 

 that, concurrently with the spread of the latest ideas on elemental 

 change, there should be instances of reversion to the utilitarian 

 phases of alchemistic thought. A patent has recently been 

 granted for " a new process of treating iron to obtain gold an^cl^ 

 silver bv transmutation." >^<\C«l(\ir#X. 



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