Chapter III: Methods of Printing 30

Impression on polished glass or razor 30

The two contrasted methods of printing 31

General remarks on printing from reliefs--ink; low relief
of ridges; layer of ink; drying due to oxidisation 32-34

Apparatus at my own laboratory--slab; roller; benzole
(or equivalent); funnel; ink; cards 35-38

Method of its manipulation 38-40

Pocket apparatus 40

Rollers and their manufacture 40

Other parts of the apparatus 41

Folders--long serviceable if air be excluded 42

Lithography 43

Water colours and dyes 44

Sir W. Herschel's official instructions 45

Printing as from engraved plates--Prof. Ray Lankester;
Dr. L. Robinson 45

Methods of Dr. Forgeot 46

Smoke prints--mica; adhesive paper, by licking with tongue 47-48

Plumbago; whitening 49

Casts--sealing-wax; dentist's wax; gutta-percha; undried
varnish; collodion 49-51

Photographs 51

Prints on glass and mica for lantern 51

Enlargements--photographic, by camera lucida, pantagraph 52-53

CHAPTER IV

THE RIDGES AND THEIR USES 54

General character of the ridges 54

Systems on the palm--principal ones; small interpolated
systems 54-55

Cheiromantic creases--their directions; do not strictly
correspond with those of ridges 56-57

Ridges on the soles of the feet 57

Pores 57

Development:--embryology; subsequent growth; disintegration
by age, by injuries 58-59

Evolution 60

Apparent use as regards pressure--theoretic; experiment
with compass points 60-61

Apparent use as regards rubbing--thrill thereby occasioned 62-63