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Haemoflagellates, etc. 
Woodcock gives a short account of some of the more important 
trypanosomes, grouping them together under the heading of their 
various hosts. We note that such important parasites as T. evansi, 
T. equiperdum and T. theileri are only just mentioned: we would like to 
have seen these and other lethal forms described fully. 
Woodcock’s appendix (A) is devoted to a consideration of the 
Leishman-Donovan-Wright-bodies, but it does not contain anything 
new regarding the parasite of Kala-Azar. We fail to understand what 
connection Wright has with this parasite, unless it is that Woodcock 
regards it as identical with the parasite of Oriental Sore. We note 
that Woodcock considers these two parasites are closely related on the 
one hand with Herpetomonas, and on the other with the Piroplasmata. 
We need hardly say that we do not consider there is any evidence to 
support the view, that the parasite of Kala-Azar is in any way con¬ 
nected with a Piroplasma. It has yet to be proved that the Piroplas¬ 
mata have a true blepharoplast analogous to that seen in Herpetomonas, 
Crithidia and Trypanosoma. 
Through the kindness of Professor Nuttall we have had the oppor¬ 
tunity of examining Breinl’s (1908) recently described flagellate stages 
of P. canis, and we have no hesitation in saying, that they are quite 
unlike the characteristic flagellates of Herpetomonas ; indeed we are 
doubtful whether they represent true flagellates. With regard to 
Kossel and Weber’s observations (see Schaudinn, 1904) on the flagellates 
found in smears of the intestinal contents of ticks, fed on cattle 
infected with Piroplasma, we would suggest that they were probably 
only flagellates of the tick, such as are known to occur in Rhipicephalus 
sanguineus and Haemaphysalis Jlava. 
Professor Nuttall, who is at present investigating Theileria ( Piro¬ 
plasma) parva, has kindly permitted us to state, that cultural 
experiments with this parasite, up to 149 hours, have so far yielded 
negative results. We (1907) have elsewhere suggested that Miyajima’s 
(1907) observations on cultures of T. parva of Japanese cattle are 
probably erroneous, in spite of the fact that he carefully guarded against 
the possibility of his cultures being infected with trypanosomes of the 
cattle. Miyajima’s figures of the seventy-two hour cultures show 
typical trypanosomes. How the diminutive T. parva comes to develop 
into these huge parasites is not explained; we would like to see this 
work confirmed by other observers. 
We (1908) have recently described a Herpetomonas which is identical 
in appearance with the parasite of Kala-Azar, and further we have 
pointed out that these herpetomonads exhibit the same stages in their 
