THE ANATOMY AND DEVELOPMENT OF THE JUGU- 
AR oy MPH SACS. INTHE “DOMESTIC, CAT 
(FELIS DOMESTICA). 
BY 
GEORGE S. HUNTINGTON AND CHARLES F. W. McCLURE. 
From the Anatomical Laboratories of Columbia and Princeton Universities. 
Wirr 66 FricureEs. 
CONTENTS. 
TEER OMUNCEION RMP Gh rae ti eke thee Nicaee TO LS Renata se Petras Skee werk ae oe Ay 178 
Nr ipo lMrmease tu alltex a MTEC cy. reese sae St cose ce oon ate each ees sea BLE eo uct ae ees 181 
A summary of former investigations bearing upon the development of the 
iceman alien, Toyo ee Naioayo) MEO sen one enon oe too nkeae ds adnan geeetod 5 o- 182 
The retention of the embryonic jugular lymph sac as an adult structure and 
the general character of the lymphatico-venous connections in the adult.. 188 
On the establishment of the lymphatico-venous connections of the adult.. 190 
Development of the veno-lymphatic plexuses and sacs of the early embryonic 
stages and the establishment of the structural basis for the subsequent 
development or the jucular lymph sacs. 2.200. oc -.s sree ss de ees 196 
I General ground-plan of the embryonic venous area involved in the sub- 
sequent development of the jugular lymph sacs........:............... 197 
II Analysis of the developmental stages in the formation of the jugular 
bymph sacs... .. nee eer een 6 2d Rp Sse PERN Noten aie oor ye 202 
WetMMNOMOn Me ermMstenestratlon’. sees ces edias asi gee ace ens = levee ors 203 
First period- of development, from the early venous stages up to the 
establishment of the three primary veno-lymphatic plexuses .......... 208 
Second period of development, from the establishment of the three primary 
veno-lymphatiec plexuses to the attainment of the adult condition of the 
OD erm ANAT) NSS Cine Testi ote sauce he ome Dee tees Gas ak PE eam eh ote 218 
These two periods of development are illustrated in the “‘Analysis”’ by 
the series of diagrams, figs. 8 to 21, inclusive. 
III Detailed description of the individual stages based upon astudy of the 
RECOM ICH MGaeay ta sigs ns eee AN oie he ager Ca. MDE IES Raenhelag als 222 
MEET VaTenI OMS Sham CSu airs Ha secant: bic sResiels oto salt a ie Wace ocho ta ere coer 226 
2. Intermediate early stages of pre-and posteardinal veno-lymphatic 
GB ENyCellOyOMAKEATLE BS Sel a eee ee CREME Rime RS Or eg sce ns Ee a ne Aa 233 
3. Subsequent early stages illustrating veno-lymphatic development... 254 
4. Two embryos illustrating the lateral displacement of certain veno- 
lymphaties which are secondarily separated by fenestration from 
the caudal division of the ventral veno-lymphatic plexus ....... 270 
_ THE AMERICAN JOURNAL OF ANATOMY, VOL. 10, NO. 2. 
