1884] 
caught flies by approaching them very slowly and grabbing 
em with one hand. If long neglected he became aggrieved; 
then he would find some conspicuous perch and give vent to his 
troubles in a series of shrill screams. If still unnoticed he would 
scream yet louder, his face expressing, as only a marmoset'’s can, 
the depth of his feelings; the hair on his forehead standing on 
end, and his whole body trembling with rage, But the exceeding ` 
force of his vocal powers was only displayed when we punished 
him, or when—rare and dreadful occurrencee—he was washed; 
then indeed his lamentations became shrieks and every line of 
his face evinced his abhorrence and wrath. On such occasions 
Billy could only be appeased with a comb; for to be combed 
was his idea of perfect happiness. As soon as he felt the 
delightful touch all sounds would cease; with eyes fixed on 
vacancy and face expressive of speechless bliss, he would stretch 
out all four arms and lie quite still as long as we pleased to comb 
him. He would then submit to lie on his back while his breast 
ms combed, or he would cling with his two front hands to a 
friendly finger, and with two hinder hands to a chair, while his body 
Was stretched to its utmost length; he would even hang by his 
hinder hands with his head down, or let us hold him up by 
the tail, 
es Billy, having never known a wild life, cared nothing for liberty ; 
-if lost in the forest, as happened once or twice, he soon brought 
— MS to him by his screams. He slept in a little basket, but 
. s*nerally broke out before morning and climbed to my wife's 
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The Naturalist Brazilian Expedition, 585 
» nesting on her shoulder. Sometimes we carried him in the 
basket while on our journeys, and he was always well contented so 
. long as he felt that he was moving ; but if we laid the basket 
: down he Presently broke into his usual heart-rending jeremiad. 
| : ~ first attempt to carry him on horseback resulted well until 
1 ~Y noticed the horse ; then a scream of terror was followed by 
a * wild rush for some hiding place, and he eventually took refuge 
‘ 2 the top of one of my great riding-boots. He was intensely 
of cats and dogs, but cared nothing about birds, turtles or 
e e had a tame land-tortoise which sometimes shared 
eet and the tortoise was frequently robbed of his dinner 
its room mate, who would sit on its back and cooly devour 
‘Pail. The monkey ate almost any vegetable, and even a 
et he was especially fond of almonds and of cheese, both 
Senerally resulted in indigestion. He also had an 
