The Mutation Theory

Pteridophyta & Spermatophyta

Coprinus Comarus Fruit Body during Aurodigestion

Galton's Law, Thomson's Heredity

Water-Culture Solution

Deaf-Mutism

Tentacle of Drosera

Detmer Figure 86

Destruction of Wood

Bacillus Tuberculosis

Funaria Hygrometrica

Exudation

Orchis mascula

Selection Experiment with Maize

Willstatter's Analysis of the Pigments in Chloroplasts

Protists

Seeds of Manitoban Trees

Fucus Pigments (Willstatter)

Spermatophytes

Hooked Fruits

Pasteur's Fluid

Germination of Spores of Mushroom

Chlamydomonas

Orchis mascula

Ripe Fruit Body of Coprinus Comarus

Tricholoma Personatum

Bacillus Anthracis

Eight Leaves "Trifid"

Protococcus Viridis and Protococcus with Red Pigment

Thirteen Leaves Including Narrow Ones

Percentage of Eminent Men

Surface of Gill of Coprinus comarus

Four Leaves "Sagittate"

Inflorescence Morphologies

Nine Leaves

The Essential Constituents of Plant Food

Sporangiophores of Phytophthora infestans

Fruit Bodies of Coprinus Comarus

Four Leaves including Fern

Cryptogamia & Phanerogamia

Ripe Antheridium of Moss Plant

Hales' Experiment on the Ascent of Sap in Wood

Pilei of Coprinus Comarus

Three Leaves "Palmate"

Plasmodiaphora Brassicae

Tuberous Roots of Dahlia

Six Leaves "Entire"

Polygonum Convolvulus