[181.] II. When the Perſpective Plane is inclined. Prob. III.

[182.] Prob. IV.

[183.] Remarks.

[184.] III. When the Perſpective Plane is Parallel or Horizontal. Prob. V.

[185.] Operation.

[186.] Demonstration.

[187.] Remarks.

[188.] Prob. VI.

[189.] Demonstration.

[190.] Prob. VII.

[191.] CHAP. IX.

[192.] Prob. I. 122. To draw Vertical Dials.

[193.] Demonstration.

[194.] Remark.

[195.] Prob. II. 123. To draw inclining Dials.

[196.] The Uſe of the Camera Obscura in Deſigning. Advertisement.

[197.] The Uſe of the Camera Obscura in Deſigning. Definition.

[198.] Theorem I.

[199.] Theorem II.

[200.] The Deſcription of the Firſt Machine.

[201.] Remarks.

[202.] Uſe of the Machine. Problem I.

[203.] Demonstration. Concerning the before-mention’d Inclination of the Mirrours.

[204.] Prob. II.

[205.] Prop. III.

[206.] Problem IV.

[207.] As the Machine’s Height above the Table, leſs the Glaſs’s focal Length, is to

[208.] The Height of the Machine above the Table; So is The Glaſſes focal Length, to the Diſtance of the Figure from the Glaſs.

[209.] 37 Remarks concerning the Repreſentation of Per-ſons Faces.

[210.] A Deſcription of the Second Machine.