TiCHBORNE — Lahomtonj Notes. 
105 
Plate XIII. 
Fig. 10. . . A small example of the " Diplophrys-like " organism (considerably 
more minute than Fig. 9.), the surrounding aggregation of foreign 
. bodies containing no diatomaceous elements, but made up of rather 
short somewhat hyaline arenaceous and nondescript granules. 
,,11. . . Plagiophrys sphcsrica (Clap, et Lachm.) (?) living, seen in profile, 
and showing its little tree-like cluster of slender braached pseu- 
dopodia, emanating from a hollow or depression at one side, which 
latter presents a number of more or less evident alternate creases 
and rounded prominences, seemingly due to the mode of infolding 
at this place of the closely-investing outer integument or " test." 
The specimen has incepted an example of Cosmarium cucurbita. 
,,12. . . Another example of the same, treated with acetic acid, showing the 
" nucleus" ejected, the body-mass retracted from the outer integu- 
ment, which at the frontal or anterior, formerly infolded, portion, 
presents a generally broadly conical shape, but characterised by 
annular ridges, giving a zigzag lateral outline. 
,, 13. . . An example of the same after treatment in the carmine fluid, showing 
the elliptic "nucleus" highly dyed, the body-mass not retracted, 
and the frontal or anterior portion of the integument (or " test"), 
formerly infolded, now pushed outwards in a broadly-conical shape, 
with a straight outline. 
14. . . An example of another form, probably provisionally referrible to the 
same species, viewed " dorsally," and presenting a dark, very shiny 
exterior, and very long, branched, and sometimes inosculating 
granuliferous pseudopodia. 
„ 15. . . Outline of the contracted and crumpled appearance at once assumed 
by an example of the foregoing on being treated with the carmine 
fluid. 
,,16. . . Balloon -shaped figure, quickly assumed by an example of the same 
under the action of the carmine fluid, the creases and wrinkles (in- 
dicated by previous figures) being obliterated ; the elliptic " nucleus " 
highly dyed, and the sarcode-body retracted from the integument 
and partially ejected through the anterior opening in the formerly 
infolded, now prolonged, truncate neck-like portion caused by its 
evagination. [All the figures x 400.] 
XY. — Laboeatoey I^'otes. Ey Chaeles E. C. Tichboeis-e, T. C. S., 
M. H. 1. A., &c. 
[Read January 9, 1871.] 
In tlie course of tlie practical working of a laboratory, and in the 
prosecution of original research, we frequently make observations, 
which although not elaborate enough to give rise to voluminous trea- 
tises are yet too valuable to be thrown aside into some obscure corner 
of a chemist's note-book. The following short notes will, I think, be 
found to consist of original matter which it would be desirable to 
place on record. 
R. I. A. PROC. VOL. I., SEE. II., SCIENCE. P 
