OONTKNn^S. 
Summary 
Introduction 
Definition 
Terminology 
Historiciil review 
Brief review of liookwormn 
Zoological i)osition of the parasites 
Family Strongylida? 
Subfamily Strongylime 
Genus Vncinarki Fmdich, 1789 
\_Uncmaria Fradich, 1789, sensu stricto] 
The New World hookworm — Unnnaria ameriawa Stiles, — 
of man 
Life history of Uncinaria americana 
Development outside the body 
Development inside the body 
[Agrinflostoma Dubini, 1843] 
The Old World hookworm — Agchylostomn diiodenale Dubini, 
1843, or Uncinaria diiodenalis {I)n\nn\, 1843) Kailliet, 1885 — 
of man 
Life history of Agchgloxtorna. dnodenale 
Development outside the body 
Segmentation 
Eml)ryo 
Second stage 
Development inside the body 
Third stage (without buccal capsule) 
Fourth stage (with provisional buccal capsule) 
Fifth stage (with definite buccal capsule) 
Source of infection of uncinariasis 
Brief review of uncinariasis 
Brief review of uncinariasis in the United States 
Itinerary of tlie trip through the Southern Atlantic States 
District of Columbia 
Virginia 
Richmond and State Farm 
North Carolina 
Virgilina copper mine district, soutliern Virginia and northern North 
Carolina 
Cumnock coal mines, Chatham County 
Sanford, IVIoore County.. 
I’Hge. 
9 
11 
11 
1 1 
12 
12 
13 
13 
14 
15 
19 
19 
20 
20 
20 
21 
21 
24 
25 
25 
25 
20 
28 
28 
28 
30 
3t) 
31 
32 
37 
37 
37 
37 
3S 
38 
38 
:i8 
