356 TniOTHY richards lewis. 



are not stained so bright a yellow by the osmic acid as the 

 cells of the corpora fiing if or mia. 



These ganglionic cells are very numerous at the back of 

 the brain (tig. 10), they extend inwards between the 

 corpora fungiformia and the so-called primary lobe ; they 

 fill the median groove above the corpus centrale (figs. 5 to 

 10) ; they are found in abundance in the angles and spaces 

 between the antennary lobes and the rest of the brain ; and, 

 as already mentioned, they form a thick layer over the optic 

 ganglion. 



These cells appear to be surrounded by connective tissue, 

 which also seems to form a large part of the fibrous 

 bands, seen passing off from them, especially at the back 

 part of the brain (fig. 10), but at the same time the 

 granular cell contents may be seen in some instance, ex- 

 tending into the fibres (fig, 13). These fibres at the back 

 of the brain (fig. 10) pass downwards almost vertically to the 

 region of the trabeculcB and then turn outwards. The cells 

 of the median sulcus are connected, as we have seen, with 

 the fibres and cells of the corpus centrale, and just in front 

 of the traheculce large fibres pass down in the middle line 

 into a peculiar fan-like arrangement of cells found on the 

 base of the brain in this region. 



The Microphytes wJtieh have been found in the Blood a^^f/ their 

 Relatiox to Disease.^ By Timothy Eichards Lew^is, M.B., 

 Surgeon, Army Medical Department; Eellow of the Calcutta 

 University. (With Plate XVII.) 



Before entering on a minute description of the microscopic 

 organisms found in the blood which are more allied to plants 

 than to animals, it will be advantageous to consider to what 

 special subdivisions of the vegetable kingdom these bodies seem 

 to belong. No small amount of confusion has arisen from want 

 of a clear knowledge of this point, especially on the part of 

 strictly medical writers who have discussed the subject of the 

 connection of disease with vegetable parasites. Nageli, in his 

 remarkably suggestive work,^ recently published, has placed this 



' Forms Part I of the Memoir on the Microzoa and Microphytes of the 

 Blood, which appears as an Appendix to the ' Fourteenth Annual Report 

 of the Sanitary Commissioners with the Government of India.' — [Ed.] 



" 'Die Niederen Pilze in ihrenBeziehungenzu den Infectionskrankheiten 

 uud der Gesundheitspflege/ Miinchen, 1877. 



