vi 
ADVERTISEMENTS. 
The BLACKMAN 
AIR PROPELLER 
has proved itself to be the most 
efficient, convenient, and econom 
ical appliance, ever introduced for 
the movement of air in volume, 
under the conditions which belong 
to good practice. Thousands are 
in most successful use, removing" 
heated and foul air, steam 
and moisture, fumes and float- 
ing dust; also for drying 
wool, yarns, cloth, glue, &c., 
&C., at low temperatures, and 
with unprecedented economy. 
THE BLACKMAN IS MOST SUCCESSFULLY USED 
FOR WITHERING TEA LEAF. 
A LEADING PLANTEK writes :—" There can be no doubt that 
in a properly built house, with the help of the ' BLACKMAN,' 
leaf withering has become an easy matter in the very worst kind of 
weather/' 
WRITE FOR PRINTED MATTER. 
MfflMAN YENTILATM go, Ltd., 
LONDON: 63, FORE STREET, E,C. 
ALSO 
AT MANCHESTER, 
BRADFORD, AND GLASGOW. 
