2 USEFUL INSTRUCTIVE BOOKS AT 25c. EACH. 
Scaffolding.—Edited by JoHN BLack. 
90 pages; illustrated by 45 engravings. 
The subject of the erection of proper scaffolding 
for various purposes is practically treated in this book. 
A short history of ancient scaffolding is given, together 
with directions for erecting ordinary bricklayers’ scaf- 
folds, ladders; shoring and needling for supporting 
buildings; cranes, lifts, hoists, traveling cranes, trans- 
porters, cable railways; repairing steeples and tall 
chimneys ; descriptions of various schemes and aids 
that will give a fund of practical information to every 
one called upon to erect scaffolding at the least cost 
in time and money. 
Hints and Aids in Building and Esti- 
MATING. A hand-book for every one en- 
gaged in the erection and repair of build- 
ings. 36 pages. 
This useful little book gives hints and prices; tells 
how to measure: explains biiilding terms, together 
with a number of tables; schedule of architects 
charges and form for building contract; form for 
making estimates; cost of doing work; work a man 
will do; diameter and height of chimneys ; weight of 
‘various roof coverings; painting. 
Cements and Glue.—A practical treatise 
on the preparation and use of all kinds of ce- 
ments, glue and paste. By JoHN Purn, author 
of ‘‘How to Use the Microscope.” 58 pages. 
. Every mechanic and householder will find this volume of 
almost every-day use. It contains nearly 200 recipes for 
the preparation of cements for almost every conceivable 
purpose, amongst which are recipes for waterproof ce- 
ments, bottle cement, cap cement, fireproof cement, various 
glues, rubber cement, iron cement, ivory cement, leather cement; to cement glass, 
stone, etc., to metal; different kinds of paste, etc. 
Plastering.—Edited by Joun Biacx. 90 pages; 
illustrated by 40 engravings. 
This book coutains quite a fund of information of a plain and 
practical character. short history of the craft is given and 
then, in order, the materials and methods are described. The 
art of plastering is described, also the tools used, etc, Other 
chapters treat of various cements and their uses; lime and 
cement mortars ; methods of outside and inside work ; decora- 
tive plastering and details; stucco coloring and plaster _paint- 
ing; fixing tiles, mouldings. scagliola, fibrous plaster and other 
plasters; making a scagliola column; making mouldings in fibrous plaster; use of 
asbestos in the making of fireproof plaster, etc. 
Concrete.—By FRANK Jay. 94 pages; 
illustrated by 38 engravings. 
The extensive use of concrete at the present time 
makes this little manual “‘filla long felt want.” It 
is written by an expert of many years’ experience in 
concrete work. The various methods now in vogue 
are described, The following is a synopsis of the 
contents: Historical; materials; aggregates and 
proportions; building in concrete; apparatus for 
erecting buildings ; floors, joists and wallings ; con- 
crete paving and flooring; methods of construction ; comparisons of different sys- 
tems; fire resisting qualities; pavings in situ; moulds for concrete work; makin 
artificial stone ; coloring and hardening ; armored concrete; manufacture and use 0: 
concrete for dams, breakwaters, etc.; use of concrete in building walls, piers, col- 
umns, floors. chimneys; building armored concrete beams, etc., etc. 
