PROGRESS OF MICROSCOPICAL SCIENCE. 91 
shape, measuring about } mm. long, by zy mm. broad. The A. verrucosa 
now appeared enclosed ina large oval clear vacuole, was constricted so 
as to be gourd-shaped, and had lost all traces of its contractile vesicle. 
Subsequently, the A. verrucosa was doubled upon itself; and at this 
period, the A. limax discharged from one side of the tail end, the 
siliceous case of the diatom, which now contained only a shrivelled 
cord of endochrome. Later the A. verrucosa was broken up into five 
spherical granular balls, and these gradually became obscured and 
apparently diffused among the granular contents of the entosare of 
the A. limaw. At one moment the five granular balls derived from 
the A. verrucosa appeared to be contained in three vacuoles, and the 
A, limax had a more contracted and radiate form, and then measured 
z's IMm.in diameter. The observation, from the time of the seizure of 
the A. verrucosa to its digestion, or disappearance among the granular 
matter of the entosare of the A. limax, occupied seven hours. From 
naked Amcebe, the test-protected rhizopods were no doubt evolved, 
and it is a curious sight to observe them swallowed, home and all, to 
be digested out of their home, just as the contents of diatoms are 
digested. It was also interesting to obgerve the cannibal Amceba 
swallowing another, and appropriating its structure to its own, just as 
we might do a piece of flesh, completely, without there being any 
excrementitious matter to be voided. 
Microscopic Organisms in the Blood of Patients suffering from 
Typhus.—The ‘ Academy ’* states that in connection with Obermeier’s 
remarkable discovery that the blood in relapsing fever is infested by 
a species of Spirochete, it is worthy of note that the same organism 
has lately been found in considerable numbers by Manassein f in the 
liquid exuding from a fistulous passage communicating with the 
antrum of Highmore; pus-cells and crystals of cholesterin were also 
present. The patient was in good health ; examination of the saliva 
and the blood yielded negative results. 
Microscopic Investigation of the Campagna Marsh Poison.—A series 
of researches that have recently been made upon this subject is of 
intense interest, although we cannot be certain as to the correctness 
of the results. The experiments have been conducted by Signori 
Lanzi and Terrigi.t “In the endochrome of alge growing in the 
Campagna and Pontine Marshes, the former observer has discovered 
certain minute dark granules, which increase in number as the alge 
die and pass into decomposition. They belong to Cohn’s group of 
pigmented spherobacteria (Bacterium brunneum of Schroter), and 
yield Monilia penicillata of Fries on cultivation. The so-called 
‘pigment granules’ present in the liver, spleen, and blood of 
persons who have suffered from malarial diseases are identical with 
the above germs. By cultivating such granules from a human liver, 
Lanzi succeeded in obtaining a Zooglea. On the basis of these 
observations, the writers construct a theory to account for the pre- 
* December 9, 1876. : 
+ ‘Centralblatt fiir die Med. Wiss.’ October 21, 1876. 
¢ Vide Abstract in ‘ Centralblatt, No. 40, 1876. 
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