Table of Contents 
Serial number 
XXXI. * 
From Huygens 
to Descartes 
Date 
X3 Nov. 1637 
PAGE 
60 
S AND 
XXXII. * 
XXXII a. 
XXXIII.* 
Descartes 
Descartes 
Huygens 
Huygens 
? Huygens 
Descartes 
4- Dec. 1637 
[? Feb. i Í3 8] 
x Feb. 1638 
6x 
64 
65 
guished by an 
XXXIV* 
XXXV* 
Descartes 
Descartes 
Huygens 
Huygens 
8 Feb. 1638 
9 Mar. 1638 
69 
71 
xxxi.) 
XXXVI. 
XXXVII. * 
Descartes 
Huygens 
Huygens 
Descartes 
[June 1638] 
3oJuly 1638 
75 
7 8 
PAGE 
XXXVIII* 1 
Descartes 
Huygens 
19 Aug. 1638 
8z 
1*35 
I 
XXXVIII a. Descartes 
? Huygens 
[? Dec. 1638] 
86 
^35 
X 
XXXIX. 
Descartes 
Huygens 
xc} Jan, 1639 
87 
i^35 
5 
XL. 
Descartes 
Huygens 
6 May 1639 
89 
7 
XLL* 
Huygens 
Descartes 
17 May 1639 
90 
163? 
9 
XLII* 
Huygens 
Descartes 
z8 May 1639 > 
9 x 
1^35- 
ii 
XLIIL* 
Descartes 
Huygens 
6 June 1639 
93 
1636 
IT 
XLIIIa. 
Descartes 
Huygens 
[Oct. 1639] 
95 
16^36^ 
!7 
The Stampioen-Waessenaer Controversy 7 introductory note. , 
98 
1636] 
19 
XLIV. 
Descartes 
Huygens 
17 Nov. 1639 
99 
16^36^ 
19 
XLV. 
Descartes 
Huygens 
x6 Nov. 1639 
104 
[636 
zi 
XLVI. 
Descartes 
Huygens 
[ix Dec. 1(539] 
107 
636 
*3 
XL VII. 
Huygens 
Descartes 
13 Dec. 1639 
IIX 
636 
ai. 
XL Vili. 
Descartes 
Huygens 
17 Dec. i<539 
114 
1636 
z6 
XLIX* 
Huygens 
Descartes 
z8 Dec. 1639 
118 
1636 
*7 
L. 
Descartes 
Huygens 
3 Jan. 1(54.0 
IZO 
637 
a 9 
LI. 
Huygens 
Descartes 
8 Jan, 164,0 
1x7 
637 
3° 
LII. 
Huygens 
Descartes 
8 Mar. 164.0 
iz8 
637 
3 X 
LIII. 
Descartes 
Huygens 
ix Mar. 164.0 
ixp 
637 
33 
LIV. 
Huygens 
Descartes 
x 9 Apr. 164.0 
13X 
1637 
35 
LV. 
Huygens 
Descartes 
a4-July 164,0 
133 
16373 
36 
LVL* 
Descartes 
Huygens 
31 July 164.0 
134 
1637 
3 8 
LVIL* 
Huygens 
Descartes 
14. Aug. 164.0 
138 
16 37 
39 
LVIIL* 
Descartes 
Huygens 
x~j Aug. 164.0 
I 4 I 
1637 
41 
LIX. 
Huygens 
Descartes 
8 Oct. 1640 
144 
6 37 
44- 
LX. . 
Huygens 
Descartes 
xc) Oct. 1640 
H5 
637 
it 
LX a. 
Descartes 
Huygens 
[11 Nov. 1640] 
146 
J f 
1637 
^37] 
637 
637 
S37 
4.8 
49 
5 1 
53 
54 
LX b. 
LXI. 
Descartes 
Huygens 
Huygens 
Descartes 
[iz Nov. 1640] 
17 Jan. 1641 
147 
148 
LXII. 
LXII1. 
Descartes 
Descartes 
Huygens 
Huygens 
16 Jan. 1641 
Apr, 1641 
!49 
151 
LXIV* 
Huygens 
Descartes 
17 July 1641 
153 
6 37 
637 
55 
58 
I 
Last page omitted in Clerselier’s text. 
xxiii d x 
*