202 
10 
11 
12 
G. W. BARTELMEZ 
DESIGNATION OF EMBRYO Be ee LENGTH 
H279 Univ. of Chicago 4 2.5 mm. in formol 
Coll. 
‘Klb.’ Normentafel no. 5 to 6 1.8 mm. in alcohol 
3 
* 391 Carnegie Coll. 8 2 mm. in formol 
(Dandy 1910) 
H87 Univ. of Chicago 8 Cire. 2 mm. in for- 
Coll. mol 
Eternod embryo ‘DuGa’|} Probably | 2.12 mm. from num- 
(1896) 9 ber of sections in 
the series 
H637 Univ. of Chicago 11 Distorted. 1.85mm. 
Coll. from number of 
sections 
H 197 Univ. of Califor- 12 1.15 mm. (much 
nia Coll. flexed) 
H392 Univ. of Chicago 11 3.6 mm. in formol 
Coll. 
*4 New York Univ. 14 2.3 mm. after fixa- 
Coll. (Wallin 1913) tion 
HS Univ. of Chicago 14 3.3 mm. in alcohol 
Coll. 
‘Pist. uP Normentafel 14 Cire. 2.6 mm. 
x6 
*470 Carnegie Coll. Probably |3.8 mm. in 95% 
16 ‘alcohol 
ACKNOWLEDGMENTS 
CONDITION 
Fair, abun- 
dant mitoses 
Excellent 
Fair 
Good 
Excellent 
Excellent his- 
tologically 
Good 
Fair clumped 
mitoses 
Good histolog- 
ically 
Poor 
Excellent 
Fair clumped 
mitoses 
This paper is part of a study of human development during 
the early part of the period of somite formation, begun in 1915 
in the Carnegie Laboratory at Baltimore in conjunction with 
Dr. H. M. Evans (1917). 
The complete account is to appear 
