No. 3384. Simple warm stage sie an ce Oe eG 
. 8479. S.I.R.A. wax. For holding specimens on 
slides ae ses sas ae pen stick: (0) 176 
. 3425. Case of apparatus for holding objects, 
including 8 slides, 2 slides with hollow, slide 
with ledge, trough on 3 Islide, Beck’s glass 
trough, Beck’s compressor, See forceps, live 
box and thin glass Ste : ae hae a dle 
. 3412. Trough, small, on 31 slide 
. 3413. Trough, large, on 3x1 slide 
No. 3414. Trough, on 31 slide 
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ey SS) f= Xv 
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No. 3397. Metal holder for carrying glass slides 
4 m/m. thick, 1-35 in. x 1-35 in., for use with 
high power dark ground illuminators ... sot Ol OMe 
The holder is a metal plate of a suitable size to go on to the plain or 
mechanical stages. It has a bevelled aperture in the centre and at the back 
has a dovetailed recess into which the thin glass plate slides and is fixed by a 
minute piece of wax at each side. The object to be examined is placed in 
the centre and covered with a cover glass in the usual manner. 
No. 3398. Glass slides, 1.35 in. x 1.35 in., approx. 
4 m/m thick vas ae sige per doz. £0 5 0 
No. 3326 Barnard compressor for use with high 
power illuminators. This compressor holds the 
cover glass and a circular plate either } m/m 
or | m/m finnly im contact) 2-- os ore) pean 
No. 3386. 
No. 3325a. 
. 3325a Haemacytometer, consisting of open or closed cell, counting chamber with 
Thoma ruling, two pipettes ‘and covers in case ss -£2 2.04 
A aoa complete, but with double cell Biirker counting chamber 
in case 2, V2 GF 
The above may be supplied ‘with any of the ‘following rulings -—Thoma, 
Turck, Neubauer, improved Neubauer, Fuchs- Rosenthal. 
5s. Haemacytometer, chess board pattern squared glass plate to drop into 
eyepiece, 25 SC(GEINeS of 1 m/m., 9 squares of 2 m/m., or squares over entire 
field either + 4 m/m., 1 m/m., or 2 m/m. So sn in each) O12. 16 
Counting chamber for use with chess board... 0b 0 
Pipette for red corpuscles OFS 2G 
Pipette for white corpuscles 0 5 6 
No. 5386. Turntable ee 
This is constructed on ball bearing principle giving a 
perfectly even motion. 
99 
