No. 1.— Observations on Budding in Paludicella and some other 
Bryozoa. By ©. B. Davenrorr.! 
CONTENTS. 
PAGE PAGE 
A. SPECIAL PART. III. Budding in Marine Gymno- 
lemata . «s . 40 
1, Architecture of the ‘Stock . 40 
2. Origin and Development of 
the Individual. . . . 53 
3. Regeneration of the Polypide 64 
I. Introduction ie Bike ab 
IL. Budding in Paludicella A eK 
1. Architecture of the Stock 
2. Histology of the seinen 
Region . . 4 4 
3. Origin of the Polyplde. in ANS g= nA pS ok ane 66 
ssue ylactolemata . 
the Terminal Bud. . . . 7 oie y 
4. Origin and Development of B. GENERAL CONSIDERATIONS. 
> Lateral Branches . . ç 
m p) I. Laws of Budding . oen 71 
ao 
» Development of the Body 
WEHR 12 
6. Development of the Polyps 18 
7. Origin of the Muscles . . 27 
8. Formation of the Neck and 
Atrial Opening . . . . 81 
9. Development of the Com- 
II. Relation of the Obserrations on 
Budding in Bryozoa to the 
serm Layer Theory . . . 88 
II. On some Characteristics of 
Gemmiparous Tissue . . 98 
IV. Relationships of Endoprocta 
canes and Botapnoctä, s.i ace a0 
munication Plate . . . 82 
10. Role of the Mesodermal Summar al ee ee OG 
Vacuolated Cells . . . 84/Literaturecitd . ..... . 109 
A. SPECIAL PART. 
I. Introduction. 
Tun somewhat heterogencous studies here brought together have been 
prosecuted at different times and in different places, as opportunity for 
getting light on the problem of non-sexual reproduction as exhibited in 
the group of Bryozoa has presented itself. 
While studies on the fresh water species were pursued chiefly here at 
Cambridge, those on marine Bryozoa were made while occupying one of 
the tables of the Museum at the United States Fish Commission Labora- 
1 Contributions from the Zoölogical Laboratory of the Museum of Comparative 
Zoölogy, under the direction of E. L. Mark, No. XXVIII. 
VOL XXIL — NO. l. 1 
