. The silver sunbeam : a practical and theoretical text-book on sun drawing and photographic printing. 552 DEFECTS AND BEMEDIES. 8. Streaks Fig. Arise from a variety of causes. 1. If the plate be im-mersed before the collodion is sufficiently set, streaks, com-mencing at the bottom ofthe plate and extending up-ward, sometimes occur. moving the plate afterimmersion in the bath. Inall cases, immediately afterplacing the plate in thebath, it should be movedboth vertically and horizon-tally for a short time, other-wise streaks in the direc-tion of the dip are likely tooccur. 3. Streaks
. The silver sunbeam : a practical and theoretical text-book on sun drawing and photographic printing. 552 DEFECTS AND BEMEDIES. 8. Streaks Fig. Arise from a variety of causes. 1. If the plate be im-mersed before the collodion is sufficiently set, streaks, com-mencing at the bottom ofthe plate and extending up-ward, sometimes occur. moving the plate afterimmersion in the bath. Inall cases, immediately afterplacing the plate in thebath, it should be movedboth vertically and horizon-tally for a short time, other-wise streaks in the direc-tion of the dip are likely tooccur. 3. Streaks acrossthe plate at right angles tothe line of dip are causedby irregularity of motionin dipping the plate. It isvery important to acquirea uniform, steady movement of the hand in dipping the plate,and care should be taken not to lift the upper portion of the plate out of the solution* until it has been some-time immersed, as by sodoing marbled stains andrings are apt to be formedon the exposed part. case any foreign solu-tion should become mixedwith the developer at thetime of pouring upon theplate, such as the drip-pings of former develo
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