152 BULLETIN of the bureau of FISHERIES. 
Chapter IX. Reproduction — Continued. p age 
Arrangement and distribution of the eggs and their attachment to the body . . 305 
Origin of the egg glue and fixation of the eggs 306 
The oviduct and its periodic changes 307 
Comparisons with other Crustacea, and theories of fixation 308 
The male sexual organs 312 
Sperm cells, their origin and structure 312 
Fertilization 315 
The seminal receptacle, copulation, and impregnation 318 
X. Development 320 
Analysis of the course of development 320 
Embryo 322 
Exclusion and dispersal of the brood 326 
Hatching process 327 
First larva 329 
Color of the larva 331 
Structure and habits 332 
Natural food of the larva 335 
Second larva 337 
Third larval stage 338 
Fourth or lobsterling stage 340 
Color in the fourth stage 341 
Fifth stage 342 
Sixth stage 344 
Seventh stage 344 
Eighth and later stages 346 
Habits of adolescent lobsters 346 
A lobster 413 days old 347 
When does the young lobster go to the bottom to stay? 347 
Food and causes of death in artificially reared lobsters 349 
Significant facts of larval and later development 350 
XI. Behavior and rate of growth 353 
Behavior of young lobsters 353 
Reactions to light 354 
Reactions to other stimuli 356 
Movements of the young lobster in a state of nature 357 
Variation in the rate of growth and duration of the stage periods 358 
Conditions which determine the rate of growth and duration of the stages. . . 359 
Rate of growth and age at sexual maturity 360 
XII. The preservation and propagation of the lobster 367 
The fact and cause of decline of the fishery 367 
The problem 369 
How the problem has been met 369 
Closed seasons 370 
Protection of berried lobsters 370 
The gauge law 371 
The life rate or law of survival 375 
Propagation of the lobster 379 
Recommendations 382 
Bibliography of the lobster — Homarus 384 
