194
Motor, Gary, the* 196
Natural science, charms of 200
Neutral line, Gary's 196
Notes and queries 203
Patent laws 192
Patents, American, recent 194
Pen, stencil, new* 195
People, a strange 195
Phosphorescence 199
Plants protected by insects 201
Pleuro-pneumonia 192
Railway, Vesuvius 200
Reading and eyesight 199
Reading, taste for 193
Regulator, engine, novel* 195
Spain a field for machinery 193
Sponges, glass* 200
Table, ironing, new* 194
Telegraph, writing 196
Telegraph, writing, Cowper's 197
Telegraphy, ocean, progress of 195
Tiller, steam, new* 191
Tree, pottery 200
Vase, Greek, ancient* 199

* * * * *

TABLE OF CONTENTS OF

THE SCIENTIFIC AMERICAN SUPPLEMENT

NO. 169,

FOR THE WEEK ENDING MARCH 29, 1879.

Price 10 cents. For sale by all newsdealers.

I. ENGINEERING AND MECHANICS.--The Herreshoff Torpedo Boat, recently
built at Bristol, R. I., for the British Government. The novelties in
the placing of the screw, etc. The Peculiar Boiler. 4
figures.--Improved Hopper Steam Dredger. 2 figures.--The St. Gothard
Tunnel.--The Beacon Tower of Lavezzi. 3 figures.

II. ARCHITECTURE.--Bath Abbey Church. Full page illustration.

III. TECHNOLOGY.--The Achison Stone Cutting Machine. 1 engraving.--The
Deep Mines of the World.--Shoemakers' Wax.--Gruber's New Method of
Germination. 1 engraving.--Improved Process for Treating Wood, etc.,
for Paper Manufacture.--Bronzing Plaster of Paris Casts.--Sal Soda for
Unhairing Hides and Skins.--Sieburger's Pa