452 
SUMMARY OF CURRENT RESEARCHES RELATING TO 
angles (fig. 118). The sections should be placed on the slide, the same 
number in each row, and if possible, in five rows of ten each (see fig. 119). 
In reconstruction it is easy then, by help of the mechanical stage, to 
select the sections by fives or tens. 
Fig. 118. 
Fig. 119. 
To facilitate the setting-out of the sections, a small wooden tray 
(fig. 120), hollowed out to the exact size of the object-slide and marked 
with lines, will be found very convenient for placing the ribbons, and 
for covering them with the glass slide. It is very useful to number the 
Fig. 120. 
rows of sections on slips of gummed paper, so as to avoid error in num- 
bering the drawings made by the camera lucida. Moreover, the slips are 
some protection against breakage. 
Levison, W. G.— Photographed Ocular Micrometers. 
[The author has found these in some respects to be more satisfactory for use 
with any objective than ruled micrometers.] 
Ann. New York Acud. of Sci., Dec. 1898, pp. 405-6. 
04) Staining- and Injecting-. 
Combined Fixing and Staining Method.* — Herr M. B. Wermel 
recommends the following formol staining solutions : — 
(1) Methylen-blue F.A. — Methylen-blue, saturated alcoholic solu- 
tion 30 ccm., formol 2 per cent, aqueous solution 100 ccm. The prepara- 
tions are treated for 5 to 8 minutes, then washed, dried, and mounted. 
(2) Eosin E. — Eosin 1 per cent, solution in 60 per cent., alcohol 
* Medizinskoe Obosrenie, 1897, pp. 829-33. See Zeitschr. f. wiss. Mikr., xvi. 
(1899) pp. 50-4. 
